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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. int t;
  4. string s;
  5. int main(){
  6.     cin >> t;
  7.     while(t--){
  8.         cin >> s;
  9.         stack<char> stk;        
  10.         for(int i = 0; i < s.size(); i++){
  11.             if(s[i] == '(') stk.push(s[i]);
  12.             else if(stk.size() && stk.top() == '(' && s[i] == ')') stk.pop();
  13.         }
  14.         if(stk.size()) cout << "NO\n";
  15.         else cout << "YES\n";
  16.     }
  17. }
Success #stdin #stdout 0.01s 5324KB
comments (?)
stdin
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6
(())())
(((()())()
(()())((()))
((()()(()))(((())))()
()()()()(()()())()
(()((())()(
stdout
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YES
NO
YES
NO
YES
NO
https://ideone.com/zqP26W
language:
C++ (gcc 8.3)
created:
5 days ago
visibility:
public

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