func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long int n, m;     cin >> n >> m;     long long int kmin = 0;     long long int kmax = 0;     long long int left;     kmax = ((n - m + 1) * (n - m)) / 2;     long long int j = n / m;     left = n % m;     kmin = (m - left) * ((j) * (j - 1) / 2) + left * ((j) * (j + 1) / 2);     cout << kmin <<     << kmax << endl;     return 0;   }   