func_code_string: #include <bits/stdc++.h>   using namespace std;   int f(long long x) {     long long i, j, cnt = 0;     for (i = 1; i <= x; i *= 2) {       for (j = i; j <= x; j *= 3) cnt++;     }     return cnt;   }   int main() {     int l, r;     cin >> l >> r;     cout << f(r) - f(l - 1);   }   