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a4ary4n
Jun 15th, 2021
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  1. temp.cpp: In function 'int main()':
  2. temp.cpp:10:23: error: no match for 'operator+' (operand types are 'std::_Rb_tree_iterator<std::pair<const char, int> >' and 'int')
  3.          auto it2 = it + 1;
  4.                     ~~~^~~
  5. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/stl_algobase.h:67:0,
  6.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/char_traits.h:39,
  7.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ios:40,
  8.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/istream:38,
  9.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/sstream:38,
  10.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:45,
  11.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39,
  12.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  13.                  from temp.cpp:1:
  14. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/stl_iterator.h:397:5: note: candidate: template<class _Iterator> std::reverse_iterator<_Iterator> std::operator+(typename std::reverse_iterator<_Iterator>::difference_type, const std::reverse_iterator<_Iterator>&)
  15.      operator+(typename reverse_iterator<_Iterator>::difference_type __n,
  16.      ^~~~~~~~
  17. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/stl_iterator.h:397:5: note:   template argument deduction/substitution failed:        
  18. temp.cpp:10:25: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
  19.          auto it2 = it + 1;
  20.                          ^
  21. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/stl_algobase.h:67:0,
  22.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/char_traits.h:39,
  23.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ios:40,
  24.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/istream:38,
  25.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/sstream:38,
  26.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:45,
  27.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39,
  28.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  29.                  from temp.cpp:1:
  30. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/stl_iterator.h:1198:5: note: candidate: template<class _Iterator> std::move_iterator<_IteratorL> std::operator+(typename std::move_iterator<_IteratorL>::difference_type, const std::move_iterator<_IteratorL>&)
  31.      operator+(typename move_iterator<_Iterator>::difference_type __n,
  32.      ^~~~~~~~
  33. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/stl_iterator.h:1198:5: note:   template argument deduction/substitution failed:      
  34. temp.cpp:10:25: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
  35.          auto it2 = it + 1;
  36.                          ^
  37. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/string:52:0,
  38.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/locale_classes.h:40,
  39.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/ios_base.h:41,
  40.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ios:42,
  41.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/istream:38,
  42.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/sstream:38,
  43.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:45,
  44.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39,
  45.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  46.                  from temp.cpp:1:
  47. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5876:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Alloc> std::operator+(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)
  48.      operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
  49.      ^~~~~~~~
  50. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5876:5: note:   template argument deduction/substitution failed:      
  51. temp.cpp:10:25: note:   'std::_Rb_tree_iterator<std::pair<const char, int> >' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>'    
  52.          auto it2 = it + 1;
  53.                          ^
  54. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/string:53:0,
  55.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/locale_classes.h:40,
  56.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/ios_base.h:41,
  57.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ios:42,
  58.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/istream:38,
  59.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/sstream:38,
  60.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:45,
  61.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39,
  62.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  63.                  from temp.cpp:1:
  64. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.tcc:1157:5: note: candidate: template<class _CharT, class _Traits, class
  65. _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Alloc> std::operator+(const _CharT*, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)
  66.      operator+(const _CharT* __lhs,
  67.      ^~~~~~~~
  68. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.tcc:1157:5: note:   template argument deduction/substitution failed:    
  69. temp.cpp:10:25: note:   mismatched types 'const _CharT*' and 'std::_Rb_tree_iterator<std::pair<const char, int> >'
  70.          auto it2 = it + 1;
  71.                          ^
  72. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/string:53:0,
  73.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/locale_classes.h:40,
  74.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/ios_base.h:41,
  75.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ios:42,
  76.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/istream:38,
  77.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/sstream:38,
  78.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:45,
  79.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39,
  80.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  81.                  from temp.cpp:1:
  82. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.tcc:1173:5: note: candidate: template<class _CharT, class _Traits, class
  83. _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Alloc> std::operator+(_CharT, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)
  84.      operator+(_CharT __lhs, const basic_string<_CharT, _Traits, _Alloc>& __rhs)
  85.      ^~~~~~~~
  86. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.tcc:1173:5: note:   template argument deduction/substitution failed:    
  87. temp.cpp:10:25: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>' and 'int'
  88.          auto it2 = it + 1;
  89.                          ^
  90. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/string:52:0,
  91.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/locale_classes.h:40,
  92.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/ios_base.h:41,
  93.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ios:42,
  94.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/istream:38,
  95.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/sstream:38,
  96.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:45,
  97.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39,
  98.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  99.                  from temp.cpp:1:
  100. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5913:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Alloc> std::operator+(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)
  101.      operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
  102.      ^~~~~~~~
  103. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5913:5: note:   template argument deduction/substitution failed:      
  104. temp.cpp:10:25: note:   'std::_Rb_tree_iterator<std::pair<const char, int> >' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>'    
  105.          auto it2 = it + 1;
  106.                          ^
  107. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/string:52:0,
  108.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/locale_classes.h:40,
  109.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/ios_base.h:41,
  110.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ios:42,
  111.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/istream:38,
  112.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/sstream:38,
  113.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:45,
  114.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39,
  115.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  116.                  from temp.cpp:1:
  117. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5929:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Alloc> std::operator+(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, _CharT)
  118.      operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, _CharT __rhs)
  119.      ^~~~~~~~
  120. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5929:5: note:   template argument deduction/substitution failed:      
  121. temp.cpp:10:25: note:   'std::_Rb_tree_iterator<std::pair<const char, int> >' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>'    
  122.          auto it2 = it + 1;
  123.                          ^
  124. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/string:52:0,
  125.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/locale_classes.h:40,
  126.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/ios_base.h:41,
  127.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ios:42,
  128.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/istream:38,
  129.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/sstream:38,
  130.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:45,
  131.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39,
  132.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  133.                  from temp.cpp:1:
  134. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5941:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Alloc> std::operator+(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)
  135.      operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
  136.      ^~~~~~~~
  137. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5941:5: note:   template argument deduction/substitution failed:      
  138. temp.cpp:10:25: note:   'std::_Rb_tree_iterator<std::pair<const char, int> >' is not derived from 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>'
  139.          auto it2 = it + 1;
  140.                          ^
  141. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/string:52:0,
  142.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/locale_classes.h:40,
  143.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/ios_base.h:41,
  144.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ios:42,
  145.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/istream:38,
  146.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/sstream:38,
  147.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:45,
  148.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39,
  149.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  150.                  from temp.cpp:1:
  151. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5947:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Alloc> std::operator+(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&)
  152.      operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
  153.      ^~~~~~~~
  154. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5947:5: note:   template argument deduction/substitution failed:      
  155. temp.cpp:10:25: note:   'std::_Rb_tree_iterator<std::pair<const char, int> >' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>'    
  156.          auto it2 = it + 1;
  157.                          ^
  158. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/string:52:0,
  159.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/locale_classes.h:40,
  160.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/ios_base.h:41,
  161.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ios:42,
  162.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/istream:38,
  163.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/sstream:38,
  164.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:45,
  165.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39,
  166.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  167.                  from temp.cpp:1:
  168. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5953:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Alloc> std::operator+(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&)
  169.      operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
  170.      ^~~~~~~~
  171. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5953:5: note:   template argument deduction/substitution failed:      
  172. temp.cpp:10:25: note:   'std::_Rb_tree_iterator<std::pair<const char, int> >' is not derived from 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>'
  173.          auto it2 = it + 1;
  174.                          ^
  175. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/string:52:0,
  176.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/locale_classes.h:40,
  177.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/ios_base.h:41,
  178.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ios:42,
  179.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/istream:38,
  180.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/sstream:38,
  181.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:45,
  182.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39,
  183.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  184.                  from temp.cpp:1:
  185. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5965:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Alloc> std::operator+(const _CharT*, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&)
  186.      operator+(const _CharT* __lhs,
  187.      ^~~~~~~~
  188. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5965:5: note:   template argument deduction/substitution failed:      
  189. temp.cpp:10:25: note:   mismatched types 'const _CharT*' and 'std::_Rb_tree_iterator<std::pair<const char, int> >'
  190.          auto it2 = it + 1;
  191.                          ^
  192. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/string:52:0,
  193.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/locale_classes.h:40,
  194.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/ios_base.h:41,
  195.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ios:42,
  196.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/istream:38,
  197.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/sstream:38,
  198.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:45,
  199.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39,
  200.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  201.                  from temp.cpp:1:
  202. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5971:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Alloc> std::operator+(_CharT, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&)
  203.      operator+(_CharT __lhs,
  204.      ^~~~~~~~
  205. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5971:5: note:   template argument deduction/substitution failed:      
  206. temp.cpp:10:25: note:   mismatched types 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>' and 'int'
  207.          auto it2 = it + 1;
  208.                          ^
  209. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/string:52:0,
  210.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/locale_classes.h:40,
  211.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/ios_base.h:41,
  212.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ios:42,
  213.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/istream:38,
  214.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/sstream:38,
  215.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:45,
  216.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39,
  217.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  218.                  from temp.cpp:1:
  219. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5977:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Alloc> std::operator+(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&, const _CharT*)
  220.      operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
  221.      ^~~~~~~~
  222. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5977:5: note:   template argument deduction/substitution failed:      
  223. temp.cpp:10:25: note:   'std::_Rb_tree_iterator<std::pair<const char, int> >' is not derived from 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>'
  224.          auto it2 = it + 1;
  225.                          ^
  226. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/string:52:0,
  227.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/locale_classes.h:40,
  228.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/ios_base.h:41,
  229.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ios:42,
  230.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/istream:38,
  231.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/sstream:38,
  232.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:45,
  233.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39,
  234.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  235.                  from temp.cpp:1:
  236. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5983:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Alloc> std::operator+(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&, _CharT)
  237.      operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
  238.      ^~~~~~~~
  239. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/basic_string.h:5983:5: note:   template argument deduction/substitution failed:      
  240. temp.cpp:10:25: note:   'std::_Rb_tree_iterator<std::pair<const char, int> >' is not derived from 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>'
  241.          auto it2 = it + 1;
  242.                          ^
  243. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39:0,
  244.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  245.                  from temp.cpp:1:
  246. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:326:5: note: candidate: template<class _Tp> std::complex<_Tp> std::operator+(const
  247. std::complex<_Tp>&, const std::complex<_Tp>&)
  248.      operator+(const complex<_Tp>& __x, const complex<_Tp>& __y)
  249.      ^~~~~~~~
  250. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:326:5: note:   template argument deduction/substitution failed:
  251. temp.cpp:10:25: note:   'std::_Rb_tree_iterator<std::pair<const char, int> >' is not derived from 'const std::complex<_Tp>'
  252.          auto it2 = it + 1;
  253.                          ^
  254. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39:0,
  255.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  256.                  from temp.cpp:1:
  257. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:335:5: note: candidate: template<class _Tp> std::complex<_Tp> std::operator+(const
  258. std::complex<_Tp>&, const _Tp&)
  259.      operator+(const complex<_Tp>& __x, const _Tp& __y)
  260.      ^~~~~~~~
  261. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:335:5: note:   template argument deduction/substitution failed:
  262. temp.cpp:10:25: note:   'std::_Rb_tree_iterator<std::pair<const char, int> >' is not derived from 'const std::complex<_Tp>'
  263.          auto it2 = it + 1;
  264.                          ^
  265. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39:0,
  266.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  267.                  from temp.cpp:1:
  268. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:344:5: note: candidate: template<class _Tp> std::complex<_Tp> std::operator+(const
  269. _Tp&, const std::complex<_Tp>&)
  270.      operator+(const _Tp& __x, const complex<_Tp>& __y)
  271.      ^~~~~~~~
  272. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:344:5: note:   template argument deduction/substitution failed:
  273. temp.cpp:10:25: note:   mismatched types 'const std::complex<_Tp>' and 'int'
  274.          auto it2 = it + 1;
  275.                          ^
  276. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/ccomplex:39:0,
  277.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
  278.                  from temp.cpp:1:
  279. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:445:5: note: candidate: template<class _Tp> std::complex<_Tp> std::operator+(const
  280. std::complex<_Tp>&)
  281.      operator+(const complex<_Tp>& __x)
  282.      ^~~~~~~~
  283. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/complex:445:5: note:   template argument deduction/substitution failed:
  284. temp.cpp:10:25: note:   'std::_Rb_tree_iterator<std::pair<const char, int> >' is not derived from 'const std::complex<_Tp>'
  285.          auto it2 = it + 1;
  286.                          ^
  287. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/deque:64:0,
  288.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:68,
  289.                  from temp.cpp:1:
  290. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/stl_deque.h:374:5: note: candidate: template<class _Tp, class _Ref, class _Ptr> std::_Deque_iterator<_Tp, _Ref, _Ptr> std::operator+(std::ptrdiff_t, const std::_Deque_iterator<_Tp, _Ref, _Ptr>&)
  291.      operator+(ptrdiff_t __n, const _Deque_iterator<_Tp, _Ref, _Ptr>& __x)
  292.      ^~~~~~~~
  293. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/stl_deque.h:374:5: note:   template argument deduction/substitution failed:
  294. temp.cpp:10:25: note:   mismatched types 'const std::_Deque_iterator<_Tp, _Ref, _Ptr>' and 'int'
  295.          auto it2 = it + 1;
  296.                          ^
  297. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/vector:65:0,
  298.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/queue:61,
  299.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:86,
  300.                  from temp.cpp:1:
  301. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/stl_bvector.h:297:3: note: candidate: std::_Bit_iterator std::operator+(std::ptrdiff_t, const std::_Bit_iterator&)
  302.    operator+(ptrdiff_t __n, const _Bit_iterator& __x)
  303.    ^~~~~~~~
  304. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/stl_bvector.h:297:3: note:   no known conversion for argument 1 from 'std::_Rb_tree_iterator<std::pair<const char, int> >' to 'std::ptrdiff_t {aka long long int}'
  305. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/stl_bvector.h:387:3: note: candidate: std::_Bit_const_iterator std::operator+(std::ptrdiff_t, const std::_Bit_const_iterator&)
  306.    operator+(ptrdiff_t __n, const _Bit_const_iterator& __x)
  307.    ^~~~~~~~
  308. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/stl_bvector.h:387:3: note:   no known conversion for argument 1 from 'std::_Rb_tree_iterator<std::pair<const char, int> >' to 'std::ptrdiff_t {aka long long int}'
  309. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/valarray:592:0,
  310.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:95,
  311.                  from temp.cpp:1:
  312. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/valarray_after.h:402:5: note: candidate: template<class _Dom1, class _Dom2> std::_Expr<std::_BinClos<std::__plus, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::_Expr<_Dom2, typename _Dom2::value_type>&)
  313.      _DEFINE_EXPR_BINARY_OPERATOR(+, __plus)
  314.      ^
  315. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/valarray_after.h:402:5: note:   template argument deduction/substitution failed:      
  316. temp.cpp:10:25: note:   'std::_Rb_tree_iterator<std::pair<const char, int> >' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
  317.          auto it2 = it + 1;
  318.                          ^
  319. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/valarray:592:0,
  320.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:95,
  321.                  from temp.cpp:1:
  322. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/valarray_after.h:402:5: note: candidate: template<class _Dom> std::_Expr<std::_BinClos<std::__plus, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)
  323.      _DEFINE_EXPR_BINARY_OPERATOR(+, __plus)
  324.      ^
  325. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/valarray_after.h:402:5: note:   template argument deduction/substitution failed:      
  326. temp.cpp:10:25: note:   'std::_Rb_tree_iterator<std::pair<const char, int> >' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
  327.          auto it2 = it + 1;
  328.                          ^
  329. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/valarray:592:0,
  330.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:95,
  331.                  from temp.cpp:1:
  332. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/valarray_after.h:402:5: note: candidate: template<class _Dom> std::_Expr<std::_BinClos<std::__plus, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const typename _Dom::value_type&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)
  333.      _DEFINE_EXPR_BINARY_OPERATOR(+, __plus)
  334.      ^
  335. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/valarray_after.h:402:5: note:   template argument deduction/substitution failed:      
  336. temp.cpp:10:25: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'int'
  337.          auto it2 = it + 1;
  338.                          ^
  339. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/valarray:592:0,
  340.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:95,
  341.                  from temp.cpp:1:
  342. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/valarray_after.h:402:5: note: candidate: template<class _Dom> std::_Expr<std::_BinClos<std::__plus, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::valarray<typename _Dom::value_type>&)
  343.      _DEFINE_EXPR_BINARY_OPERATOR(+, __plus)
  344.      ^
  345. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/valarray_after.h:402:5: note:   template argument deduction/substitution failed:      
  346. temp.cpp:10:25: note:   'std::_Rb_tree_iterator<std::pair<const char, int> >' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
  347.          auto it2 = it + 1;
  348.                          ^
  349. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/valarray:592:0,
  350.                  from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:95,
  351.                  from temp.cpp:1:
  352. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/valarray_after.h:402:5: note: candidate: template<class _Dom> std::_Expr<std::_BinClos<std::__plus, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const std::valarray<typename _Dom::value_type>&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)
  353.      _DEFINE_EXPR_BINARY_OPERATOR(+, __plus)
  354.      ^
  355. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/bits/valarray_after.h:402:5: note:   template argument deduction/substitution failed:      
  356. temp.cpp:10:25: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'int'
  357.          auto it2 = it + 1;
  358.                          ^
  359. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:95:0,
  360.                  from temp.cpp:1:
  361. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/valarray:1172:1: note: candidate: template<class _Tp> std::_Expr<std::_BinClos<std::__plus, std::_ValArray, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__plus, _Tp>::result_type> std::operator+(const std::valarray<_Tp>&, const std::valarray<_Tp>&)
  362.  _DEFINE_BINARY_OPERATOR(+, __plus)
  363.  ^
  364. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/valarray:1172:1: note:   template argument deduction/substitution failed:
  365. temp.cpp:10:25: note:   'std::_Rb_tree_iterator<std::pair<const char, int> >' is not derived from 'const std::valarray<_Tp>'
  366.          auto it2 = it + 1;
  367.                          ^
  368. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:95:0,
  369.                  from temp.cpp:1:
  370. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/valarray:1172:1: note: candidate: template<class _Tp> std::_Expr<std::_BinClos<std::__plus, std::_ValArray, std::_Constant, _Tp, _Tp>, typename std::__fun<std::__plus, _Tp>::result_type> std::operator+(const std::valarray<_Tp>&, const _Tp&)
  371.  _DEFINE_BINARY_OPERATOR(+, __plus)
  372.  ^
  373. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/valarray:1172:1: note:   template argument deduction/substitution failed:
  374. temp.cpp:10:25: note:   'std::_Rb_tree_iterator<std::pair<const char, int> >' is not derived from 'const std::valarray<_Tp>'
  375.          auto it2 = it + 1;
  376.                          ^
  377. In file included from C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:95:0,
  378.                  from temp.cpp:1:
  379. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/valarray:1172:1: note: candidate: template<class _Tp> std::_Expr<std::_BinClos<std::__plus, ^
  380. C:/Program Files/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/valarray:1172:1: note:   template argument deduction/substitution failed:
  381. temp.cpp:10:25: note:   mismatched types 'const std::valarray<_Tp>' and 'int'
  382.          auto it2 = it + 1;
  383.                          ^
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