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Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 7727 Accepted Submission(s): 4560
#include<stdio.h>
#include<string.h>
#include<math.h>
#define MAX 1100000
int main()
{
int n,m,j,i,s,t,l;
scanf("%d",&t);
while(t--)
{
scanf("%d",&n);
s=0;
for(i=pow(2,n-1);i<pow(2,n);i++)
{
m=i;
while(m)
{
if(m%2==1)
s++;
m/=2;
}
}
printf("%d\n",s);
}
return 0;
}
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原文地址：http://www.cnblogs.com/tonghao/p/4668307.html
