In function 'void Sim(int)':
36:22: error: call of overloaded 'abs(float)' is ambiguous
36:22: note: candidates are:
In file included from /usr/include/c++/4.9/cstdlib:72:0,
                 from /usr/include/c++/4.9/ext/string_conversions.h:41,
                 from /usr/include/c++/4.9/bits/basic_string.h:2850,
                 from /usr/include/c++/4.9/string:52,
                 from /usr/include/c++/4.9/bits/locale_classes.h:40,
                 from /usr/include/c++/4.9/bits/ios_base.h:41,
                 from /usr/include/c++/4.9/ios:42,
                 from /usr/include/c++/4.9/ostream:38,
                 from /usr/include/c++/4.9/iostream:39,
                 from 1:
/usr/include/stdlib.h:775:12: note: int abs(int)
 extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur;
            ^
In file included from /usr/include/c++/4.9/ext/string_conversions.h:41:0,
                 from /usr/include/c++/4.9/bits/basic_string.h:2850,
                 from /usr/include/c++/4.9/string:52,
                 from /usr/include/c++/4.9/bits/locale_classes.h:40,
                 from /usr/include/c++/4.9/bits/ios_base.h:41,
                 from /usr/include/c++/4.9/ios:42,
                 from /usr/include/c++/4.9/ostream:38,
                 from /usr/include/c++/4.9/iostream:39,
                 from 1:
/usr/include/c++/4.9/cstdlib:174:3: note: long long int std::abs(long long int)
   abs(long long __x) { return __builtin_llabs (__x); }
   ^
/usr/include/c++/4.9/cstdlib:166:3: note: long int std::abs(long int)
   abs(long __i) { return __builtin_labs(__i); }
   ^
 In function 'void Rect(int)':
61:76: error: call of overloaded 'abs(float)' is ambiguous
61:76: note: candidates are:
In file included from /usr/include/c++/4.9/cstdlib:72:0,
                 from /usr/include/c++/4.9/ext/string_conversions.h:41,
                 from /usr/include/c++/4.9/bits/basic_string.h:2850,
                 from /usr/include/c++/4.9/string:52,
                 from /usr/include/c++/4.9/bits/locale_classes.h:40,
                 from /usr/include/c++/4.9/bits/ios_base.h:41,
                 from /usr/include/c++/4.9/ios:42,
                 from /usr/include/c++/4.9/ostream:38,
                 from /usr/include/c++/4.9/iostream:39,
                 from 1:
/usr/include/stdlib.h:775:12: note: int abs(int)
 extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur;
            ^
In file included from /usr/include/c++/4.9/ext/string_conversions.h:41:0,
                 from /usr/include/c++/4.9/bits/basic_string.h:2850,
                 from /usr/include/c++/4.9/string:52,
                 from /usr/include/c++/4.9/bits/locale_classes.h:40,
                 from /usr/include/c++/4.9/bits/ios_base.h:41,
                 from /usr/include/c++/4.9/ios:42,
                 from /usr/include/c++/4.9/ostream:38,
                 from /usr/include/c++/4.9/iostream:39,
                 from 1:
/usr/include/c++/4.9/cstdlib:174:3: note: long long int std::abs(long long int)
   abs(long long __x) { return __builtin_llabs (__x); }
   ^
/usr/include/c++/4.9/cstdlib:166:3: note: long int std::abs(long int)
   abs(long __i) { return __builtin_labs(__i); }
   ^
62:22: error: call of overloaded 'abs(float)' is ambiguous
62:22: note: candidates are:
In file included from /usr/include/c++/4.9/cstdlib:72:0,
                 from /usr/include/c++/4.9/ext/string_conversions.h:41,
                 from /usr/include/c++/4.9/bits/basic_string.h:2850,
                 from /usr/include/c++/4.9/string:52,
                 from /usr/include/c++/4.9/bits/locale_classes.h:40,
                 from /usr/include/c++/4.9/bits/ios_base.h:41,
                 from /usr/include/c++/4.9/ios:42,
                 from /usr/include/c++/4.9/ostream:38,
                 from /usr/include/c++/4.9/iostream:39,
                 from 1:
/usr/include/stdlib.h:775:12: note: int abs(int)
 extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur;
            ^
In file included from /usr/include/c++/4.9/ext/string_conversions.h:41:0,
                 from /usr/include/c++/4.9/bits/basic_string.h:2850,
                 from /usr/include/c++/4.9/string:52,
                 from /usr/include/c++/4.9/bits/locale_classes.h:40,
                 from /usr/include/c++/4.9/bits/ios_base.h:41,
                 from /usr/include/c++/4.9/ios:42,
                 from /usr/include/c++/4.9/ostream:38,
                 from /usr/include/c++/4.9/iostream:39,
                 from 1:
/usr/include/c++/4.9/cstdlib:174:3: note: long long int std::abs(long long int)
   abs(long long __x) { return __builtin_llabs (__x); }
   ^
/usr/include/c++/4.9/cstdlib:166:3: note: long int std::abs(long int)
   abs(long __i) { return __builtin_labs(__i); }
   ^