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哪里错了,总是WA!!!

Posted by 200730720308 at 2009-05-21 22:06:36 on Problem 3734
代码如下:

#include"stdio.h"
#include"math.h"

void main()
{
	int n, t;
	long ans;
	scanf("%d", &t);
	while(t--)
	{
		scanf("%d", &n);
		ans = (long)pow(2, n-1) + (long)pow(4, n-1);
		printf("%ld\n", ans);
	}
}

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