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;

    double x = h,y = 0;
    for(int i = 1; i <= n; i++)
    {   
        
        x += 2*y;
        y = h / 2;
        h = y;
    }
    cout << fixed << setprecision(1)<< x << " " << y;

    return 0;
}