func_code_string: #include <bits/stdc++.h>   using namespace std;   bool SortbySecDesc(const pair<long long, long long> &a,                      const pair<long long, long long> &b) {     return a.second > b.second;   }   bool sortinrev(const pair<int, int> &a, const pair<int, int> &b) {     return (a.first > b.first);   }   int main() {     ios_base::sync_with_stdio(0);     cin.tie(nullptr);     ;     int t;     cin >> t;     while (t--) {       long long a, b;       cin >> a >> b;       long long low = 1, high = 1e18, ans;       while (low <= high) {         long long mid = (low + high) / 2;         long long vag = mid / a;         long long baki = mid - vag;         if (baki >= b) {           ans = mid;           high = mid - 1;         } else {           low = mid + 1;         }       }       cout << ans << endl;     }     return 0;   }   