func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long a, b;     cin >> a >> b;     int count = 0;     for (int i = 0; (1LL << i) / 2 <= b; i++) {       for (int j = 0; j < i - 1; j++) {         long long n = (1LL << i) - 1 - (1LL << j);         if (a <= n && n <= b) count++;       }     }     cout << count <<   n ;     return 0;   }   