#include <iostream>
#include <iomanip>
using namespace std;
int main() {
    int n, k, ans = 0, sum = 0, num = 0, dim = 0;
    cin >> n >> k;
    for (int i = 0; i < n; i++) {
        if (i % k == 0) {
           ans += i;
        } else {
           sum += i;
        }
    }
    for (int i = 0; i < ans; i++) {
        num += i;
        num = num / ans;
    }
    for (int i = 0; i < sum; i++) {
        dim += i;
        dim = dim / sum;
    }
    cout << fixed << setprecision(1) << num << " " << dim << endl;
    return 0;
}