题解 | #求小球落地5次后所经历的路程和第5次反弹的高度#

#include <bits/stdc++.h>

using namespace std;

void process(int num, double& distance, double& high){
    double tmp = (double)num;
    for(int i = 0; i < 5; i++){           
        distance += tmp * 2;
        tmp = tmp / 2;     
    }
    distance = distance - (double)num;
    high = tmp;
}

int main(){
    int num = 0;
    cin >> num;
    double distance = 0.0;
    double high = 0.0;
    
    process(num, distance, high);
    
    printf("%lf\n", distance);
    printf("%lf\n", high);
    
    return 0;
}