题解 | #数列的和#
数列的和
http://www.nowcoder.com/practice/fe19f8a78a5148018f4be53ae9b5e11e
自存
#include <bits/stdc++.h>
using namespace std;
int main(){
int n,m;
while(scanf("%d %d",&n,&m)!=EOF){
double sum = 0;
double num = n;
for (int i = 0; i < m; ++i) {
sum += num;
num = sqrt(num);
}
printf("%0.2f\n",sum);
}
}
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