func_code_string: #include <bits/stdc++.h>   using namespace std;   long long nC2(int n) {     if (n == 0) return 0;     return ((long long)n * (n - 1)) / 2;   }   void solve() {     int n, m;     scanf( %d %d , &n, &m);     long long Kmin, Kmax;     int r = n % m;     Kmin = nC2((n + m - 1) / m) * r + nC2(n / m) * (m - r);     Kmax = nC2(n - m + 1);     printf( %lld %lld n , Kmin, Kmax);   }   int main() {     int tt;     tt = 1;     for (int i = 0; i < tt; ++i) {       solve();     }     return 0;   }   