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  1. #include<bits/stdc++.h>
  2. #define ll long long
  3. using namespace std ;
  4. bool check(string s)
  5. {
  6.     deque<char>d;
  7.     for(ll i =0 ; i < s.length();i++)
  8.     {
  9.         if(s[i]=='(')
  10.         {
  11.             d.push_back('(');
  12.         }
  13.         else
  14.         {
  15.             if(d.empty())
  16.             {
  17.                 cout<<"s"<<endl;
  18.                 return false;
  19.             }
  20.             else
  21.             {
  22.                 d.pop_front();
  23.             }
  24.         }
  25.     }
  26.     if(d.empty())
  27.         return true;
  28.     else
  29.         return false;
  30. }
  31. int main()
  32. {
  33.     ios_base::sync_with_stdio(false);
  34.     cin.tie(0);
  35.     cout.tie(0);
  36. //    freopen(".INP","r",stdin);
  37. //    freopen(".OUT","w",stdout);
  38.     string s ;
  39.      cin>>s;
  40.      cout<<check(s)<<endl;
  41.     return 0;
  42. }
  43.  
Success #stdin #stdout 0s 5300KB
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1
https://ideone.com/D7ybVp
language:
C++ (gcc 8.3)
created:
17 days ago
visibility:
public

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