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;
    double s = 0;

    cin >> h;
    cin >> n;

    // write your code here......
    for (int i = 1; i <= n; i++) {

        s += h;
        if (i > 1) {
            s += h;
        }
        h /= 2;


    }
    cout << fixed << setprecision(1) << s << " " << h;

    return 0;
}