func_code_string: #include <bits/stdc++.h>   using namespace std;   void solve() {     long long a, b;     cin >> a >> b;     if (b / 2 >= a)       cout << (b % (b / 2 + 1));     else       cout << b % a;     cout <<   n ;     return;   }   signed main() {     ios_base::sync_with_stdio(false), cin.tie(0), cout.tie(0);     srand(time(NULL));     long long t = 1;     cin >> t;     while (t--) solve();   }   