func_code_string: #include <bits/stdc++.h>   using namespace std;   int gcd(int a, int b) {     if (b == 0) {       return a;     }     return gcd(b, a % b);   }   int main() {     int x, y;     long long int a, b;     cin >> x >> y >> a >> b;     int lcm = (x * y) / (gcd(x, y));     int ans = (b / lcm) - ((a - 1) / lcm);     cout << ans << endl;     return 0;   }   