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Oct 16th, 2019
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C++ 0.40 KB | None | 0 0
  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. int main()
  4. {
  5.     int g,h,t,nt=0;
  6.     scanf("%d",&t);
  7.     int wq[t+3],ew[t+3],k[t+3]={0};
  8.     for(g=0;g<t;g++)scanf("%d",&wq[g]);
  9.     for(g=0;g<t;g++)scanf("%d",&ew[g]);
  10.     for(g=h=0;g<t&&h<t;g++,h++){
  11.         while(k[wq[g]]&&g<t)g++;
  12.         while(wq[g]!=ew[h]&&h<t)
  13.             k[ew[h]]=1,h++,nt++;
  14.     }
  15.     printf("%d\n",nt);
  16.     return 0;
  17. }
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