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  1. #include <iostream>
  2. #define LL long long
  3. using namespace std;
  4.  
  5. LL N,res; int T;
  6.  
  7. int main(){
  8.     cin >> T;
  9.  
  10.     LL aux,f1,f2,l,i;
  11.     while (T--){
  12.         cin >> N;
  13.  
  14.         res=0;
  15.         f1=1,f2=1;
  16.  
  17.         while (f2+f1<=N){
  18.             l=-1;
  19.             for (i=1; i*i<=N/f2 || (N-f2*i)/(f1*i)==l; i++) l=(N-f2*i)/(f1*i),res+=l;
  20.             for (i=1; i<l; i++) res+=i*(N/(i*f1+f2)-N/((i+1)*f1+f2));
  21.  
  22.             aux=f1+f2;
  23.             f1=f2,f2=aux;
  24.         }
  25.  
  26.         for (i=1; i*i<=N || l==N/i; i++) res+=N/i,l=N/i;
  27.         for (i=1; i<l; i++) res+=i*(N/i-N/(i+1));
  28.         cout << res << "\n";
  29.     }
  30. }
Success #stdin #stdout 0s 3468KB
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https://ideone.com/flvne6
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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