func_code_string: #include <bits/stdc++.h>   long long n, ans;   int main() {     scanf( %lld , &n);     for (long long i = 2; i / 2 <= n; i *= 2) {       ans += (n + i / 2 - 1) / i * (i / 2);     }     printf( %lld n , ans);     return 0;   }   