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_h = h;
    for (int i = 2; i <= n; i++){
        h /= 2;
        sum_h += 2 * h;
    }
    cout << setprecision(1) << fixed << sum_h << " " << h/2 << endl;

    return 0;
}