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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define IOS ios::sync_with_stdio(false); cin.tie(nullptr);
  4. #define ll long long
  5. #define endl '\n'
  6.  
  7. void fileIO() {
  8. #ifndef ONLINE_JUDGE
  9.     freopen("input.txt", "r", stdin);
  10.     freopen("output.txt", "w", stdout);
  11. #endif
  12. }
  13.  
  14. void solve() {
  15.     string s;
  16.  
  17.     while (cin >> s) {
  18.         queue<char> a;
  19.         queue<char> b;
  20.  
  21.         int flag = 0;
  22.  
  23.         for (int i = 0; i < s.size(); i++) {
  24.             char c = s[i];
  25.             if (c == '[') {
  26.                 flag++;
  27.             }
  28.             else if (c == ']') {
  29.                 flag--;
  30.             }
  31.             else {
  32.                 if (flag > 0) b.push(c);
  33.                 else a.push(c);
  34.             }
  35.         }
  36.  
  37.         while (!b.empty()) {
  38.             cout << b.front();
  39.             b.pop();
  40.         }
  41.  
  42.         while (!a.empty()) {
  43.             cout << a.front();
  44.             a.pop();
  45.         }
  46.  
  47.         cout << endl;
  48.     }
  49. }
  50.  
  51. int main() {
  52.     IOS;
  53.     fileIO();
  54.  
  55.     int testCases = 1;
  56.     // cin >> testCases;
  57.     while (testCases--) {
  58.         solve();
  59.     }
  60. }
Success #stdin #stdout 0s 5316KB
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Standard output is empty
https://ideone.com/qgfbxj
language:
C++ (gcc 8.3)
created:
23 hours ago
visibility:
public

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