题解 | #计算小球走过的路程和反弹高度#

#include <iostream>
#include <iomanip>
using namespace std;

int main() {

    // 下落的高度和落地的次数
    double h;
    int n;

    cin >> h;
    cin >> n;

    // write your code here......
    double sum = 0;

    for (int i = 1; i <= n; i++) {
        sum += h;
        h /= 2;
        sum += h;
    }
    // printf("%0.1f %0.1f\n", sum - h, h);
    cout << fixed << setprecision(1) << sum - h << " " << setprecision(
             1) << h << endl;

    return 0;
}