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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. bool visit[100020];
  5. int main(){
  6.  
  7.     #ifdef PARTHO
  8.         freopen("C:\\Users\\parth\\Desktop\\input.txt","r",stdin);
  9.         freopen("C:\\Users\\parth\\Desktop\\output.txt","w",stdout);
  10.         int start_time = clock();
  11.     #endif
  12.  
  13.    queue<int> enter;
  14.     int n;
  15.     cin >> n;
  16.     int value;
  17.     for( int i= 0;i<n;i++)
  18.     {
  19.         cin >> value;
  20.         enter.push(value);
  21.     }
  22.  
  23.     int fine = 0;
  24.     for(int i = 0;!enter.empty();i++)
  25.       {
  26.         cin >> value;
  27.         int top = enter.front();
  28.         while(visit[top])
  29.         {
  30.             enter.pop();
  31.             top = enter.front();
  32.         }
  33.  
  34.         if(value==top)
  35.         {
  36.             visit[value] = 1;
  37.             enter.pop();
  38.         }
  39.         else
  40.         {
  41.             if(!visit[value])
  42.                 fine++;
  43.  
  44.             visit[value] = 1;
  45.  
  46.         }
  47.  
  48.  
  49.       }
  50.       cout << fine << endl;
  51.  
  52.  
  53.     #ifdef PARTHO
  54.         int end_time = clock();
  55.         printf("Time = %f\n",(end_time-start_time+0.0)/CLOCKS_PER_SEC);
  56.     #endif
  57.     return 0;
  58. }
  59.  
Success #stdin #stdout 0s 4504KB
comments (?)
stdin 
5
3 5 2 1 4
4 3 2 5 1
stdout 
2
https://ideone.com/prrXp7
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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