func_code_string: #include <bits/stdc++.h>   using namespace std;   int t;   long long x, y;   int main() {     cin >> t;     while (t--) {       cin >> x >> y;       if (x == y)         cout << x << endl;       else if (x > y)         cout << x + y << endl;       else         cout << y - y % x / 2 << endl;     }   }   