func_code_string: #include <bits/stdc++.h>   using namespace std;   long long n, a, b;   int main() {     cin >> n;     for (int i = 0; i < n; i++) {       cin >> a >> b;       if (a > b) {         cout << b * (b + 1) / 2 << endl;       } else {         cout << a * (a - 1) / 2 + 1 << endl;       }     }   }   