View Code of Problem 72

#include <iostream>
#include <cstdio>

using namespace std;

int main() {
    int m, n;
    cin >> m >> n;
    double k = 1.0;
    double r2 = 0;
    while (n--) {
        r2 += m / k;
        k *= 2;
        r2 += m / k;
    }
    r2 -= m / k;
    double r1 = m / k;
    printf("%.2f %.2f",r1, r2);
}