题解 | 弹地小球
弹地小球
https://www.nowcoder.com/practice/0e3301735881444d902834df9b13a74c
#include<iostream>
using namespace std;
int main() {
int n;
cin >> n;
while (n) {
double h;
int w;
cin >> h >> w;
int temp = w;
double sum = 0;
while (temp) {
if (temp == w) {
sum += h;
}
else {
h /= 2.0;
sum += 2 * h;
}
temp--;
}
printf("%.2f\n", sum);
n--;
}
}
