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  1. #define _CRT_SECURE_NO_WARNINGS
  2. #include <bits/stdc++.h>
  3. using namespace std;
  4.  
  5. queue <int> q;
  6. int main() {
  7. ios::sync_with_stdio(false);
  8. cin.tie(nullptr);
  9. //freopen(stdin);
  10.  
  11.       int n;
  12.       cin>>n;
  13.       while(n--)
  14.       {
  15.         int a,b;
  16.         cin>>a>>b;
  17.         if(a==1)
  18.         {
  19.           q.push(b);
  20.         }
  21.         else
  22.         {
  23.           if(q.front()==b)
  24.           {
  25.             cout<<"YES\n";
  26.             q.pop();
  27.           }
  28.           else
  29.           {
  30.             cout<<"NO\n";
  31.             q.pop();
  32.           }
  33.         }
  34.       }
  35.  
  36. return 0;
  37. }
Success #stdin #stdout 0.01s 5288KB
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https://ideone.com/pMCAoE
language:
C++ (gcc 8.3)
created:
5 days ago
visibility:
public

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