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