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Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 4580 Accepted Submission(s): 2769
#include "stdio.h"
int main()
{
int n;
double sum,i;
while(scanf("%d",&n)&&n)
{
sum=n;
i=2;
while(n--)
sum+=(1/i++)*n*2;
printf("%.2lf\n",sum);
}
}
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原文地址：http://www.cnblogs.com/tianyong/p/4176825.html
