func_code_string: #include <bits/stdc++.h>   using namespace std;   const long double PI = acos(-1);   const long long MOD = 1000000007;   const long long FMOD = 998244353;   long long cnt1, cnt2, x, y;   bool isSafe(long long mid) {     long long div1 = mid / x;     long long div2 = mid / y;     long long div3 = mid / (x * y);     long long no = mid - (div1 + div2 - div3);     long long p = div1 - div3;     long long q = div2 - div3;     long long ans1 = cnt1 - q;     long long ans2 = cnt2 - p;     if (ans1 < 0) ans1 = 0;     if (ans2 < 0) ans2 = 0;     return (ans1 + ans2) <= no;   }   signed main() {     cin >> cnt1 >> cnt2 >> x >> y;     long long beg = 0, end = 1e10;     long long ans = 0;     while (beg <= end) {       long long mid = (beg + end) / 2;       if (isSafe(mid)) {         ans = mid;         end = mid - 1;       } else {         beg = mid + 1;       }     }     cout << ans;   }   