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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.     int n, v[10001], m, k, x;
  6.     cin >> n;
  7.     for (int i = 1; i <= n; ++i) {
  8.         cin >> v[i];
  9.     }
  10.     cin >> m;
  11.     for (int j = 1; j <= m; ++j) {
  12.         cin >> k;
  13.         if (k == 1) {
  14.             cin >> x;
  15.             ++n;
  16.             v[n] = x;
  17.         }
  18.         if (k == 2) {
  19.         	if(n > 0){
  20.             --n;
  21.         	}
  22.         }
  23.     }
  24.     cout << n << "\n ";
  25.     for (int i = 1; i <= n; ++i) {
  26.         cout << v[i] << " ";
  27.     }
  28.     return 0;
  29. }
Success #stdin #stdout 0.01s 5276KB
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https://ideone.com/YuEQwm
language:
C++ (gcc 8.3)
created:
12 hours ago
visibility:
public

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