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Nov 23rd, 2017
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  1. #include <bits/stdc++.h>
  2.  
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7. list<char> l;
  8. bool is=false;
  9. char idx;
  10. string s;
  11. cin>>s;
  12. for(int i=0; i<s.size(); i++)
  13. {
  14. if(s[i]!='['&&s[i]!=']'&&is==false)
  15. {
  16. l.push_back(s[i]);
  17.  
  18. }
  19. else if(s[i]!='['&&s[i]!=']'&&is==true)
  20. {
  21. l.insert(idx,s[i]);
  22. }
  23. else if(s[i]=='[')
  24. {
  25. is=true;
  26. idx=l.begin();
  27.  
  28. }
  29. else if(s[i]==']')
  30. {
  31. is=false;
  32. }
  33. }
  34.  
  35. for (auto it : l)
  36. {
  37. cout<<it;
  38. }
  39. return 0;
  40. }
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