题解 | #计算小球走过的路程和反弹高度#

#include <iostream>
#include <stdio.h>

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 height=0.0, dist =0.0;

    height = h;
    for( int i = 1; i < n; i++)
    {
        height /= 2.0;
        dist += height + height*2.0;
    }

    dist += height;
    height /= 2.0;

    //cout <<  dist << " " << height << endl;
    printf("%.1f %.1f",dist, height);
    return 0;
}

总共n次回弹，每次回弹都是前一次高度的1.5倍，但最后一次回弹后，还多了一个回弹高度的落地距离