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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.     int n, v[900001], m, w[400001], x;
  6.     cin >> n >> m;
  7.     for (int i = 1; i <= n; ++i) {
  8.         cin >> v[i];
  9.     }
  10.     for (int j = 1; j <= m; ++j) {
  11.         cin >> w[j];
  12.         if (w[j] == 1 && n != 0) {
  13.         	for (int i = 1; i < n; ++i) {
  14.             	v[i] = v[i + 1];
  15.             }
  16.             --n;
  17.         }
  18.         if (w[j] == 2) {
  19.             ++n;
  20.             cin >> x;
  21.             v[n] = x;
  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 5632KB
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stdin
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3 4
30 21 81
1
1
1
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stdout
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https://ideone.com/HG0QC5
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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