func_code_string: #include <bits/stdc++.h>   using namespace std;   void solve(int test_case) {     int a, b;     cin >> a >> b;     cout << b % max(b / 2 + 1, a) <<   n ;   }   int main() {     ios::sync_with_stdio(false);     cin.tie(nullptr);     int t;     cin >> t;     for (int test_case = 1; test_case <= t; ++test_case) {       solve(test_case);     }   }   