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  1. #include <bits/stdc++.h>
  2. #define int long long
  3. using namespace std;
  4. int n,mxlg,x[500005],bit[500005];
  5. void UPDATE(int i, int v)
  6. {
  7.     while (i<=n) bit[i]+=v,i+=i&(-i);
  8.     return;
  9. }
  10. int GET(int l, int r)
  11. {
  12.     l--;
  13.     int resl=0,resr=0;
  14.     while (l>0) resl+=bit[l],l-=l&(-l);
  15.     while (r>0) resr+=bit[r],r-=r&(-r);
  16.     return resr-resl;
  17. }
  18. int BS(int lo, int hi, int vl)
  19. {
  20.     int ans;
  21.     while (lo<=hi)
  22.     {
  23.         int mid=lo+(hi-lo)/2;
  24.         if (GET(1,mid)>=vl) ans=mid,hi=mid-1;
  25.         else lo=mid+1;
  26.     }
  27.     return ans;
  28. }
  29. signed main()
  30. {
  31.     ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
  32.     cin>>n,mxlg=log(n)/log(2);
  33.     for (int i=1;i<=n;i++) cin>>x[i],UPDATE(i,1);
  34.     for (int i=1;i<=n;i++)
  35.     {
  36.         int idx,ans;
  37.         cin>>idx;
  38.         ans=BS(1,n,idx),UPDATE(ans,-1);
  39.         cout<<x[ans]<<' ';
  40.     }
  41.     return 0;
  42. }
Success #stdin #stdout 0s 5316KB
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https://ideone.com/E9aCG9
language:
C++14 (gcc 8.3)
created:
2 days ago
visibility:
public

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