func_code_string: #include <bits/stdc++.h>   using namespace std;   int gcd(int a, int b) {     if (b == 0)       return a;     else       return gcd(b, a % b);   }   int main() {     ios_base::sync_with_stdio(true);     int c1, c2, a, b;     cin >> c1 >> c2 >> a >> b;     long long lo, hi, mid, numdiva, numdivb, numdivl, lcm, gc, na, nb, nl;     lo = 0;     hi = 3 * (1e9);     gc = gcd(a, b);     lcm = a;     lcm = (lcm * b) / gc;     while (hi > lo) {       mid = (lo + hi) >> 1;       numdiva = mid / a;       na = mid - numdiva;       if (na < c1) {         lo = mid + 1;         continue;       }       numdivb = mid / b;       nb = mid - numdivb;       if (nb < c2) {         lo = mid + 1;         continue;       }       numdivl = mid / lcm;       nl = mid - (numdiva + numdivb - numdivl);       if (na + nb - nl >= (c1 + c2))         hi = mid;       else         lo = mid + 1;     }     cout << lo <<   n ;     return 0;   }   