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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define int long long
  4.  
  5. signed main() {
  6.     int n = 6174, res = 0;
  7.     for (int i = 0; (1LL << i) <= n; i++) {
  8.         int x = n / (1LL << i);
  9.         int k = (x + 1) / 2;
  10.         res += k * k;
  11.     }
  12.     cout << res << '\n';
  13. }
Success #stdin #stdout 0.01s 5376KB
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Standard input is empty
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12708024
https://ideone.com/9q9Fhu
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
public

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