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极度水题,贴代码(给不会用sort的菜鸟们)

Posted by bjtu1 at 2009-03-24 21:44:38 on Problem 3637
不说了,
#include<stdio.h>
#include<stdlib.h>


int cmp( const void *e1, const void *e2){
	return *(int *)e2-*(int *)e1;
};

int money[20001];


int main()
{
	int i;
	int n;
	int t,sum;

	while(scanf("%d",&t)!=EOF){
		while(t--){
	sum=0;
	scanf("%d",&n);
	for(i=0;i<n;i++)
		scanf("%d",&money[i]);
	qsort(money,n,sizeof(money[0]),cmp);

	for(i=2;i<n;i+=3)
		sum+=money[i];
	printf("%d\n",sum);

	}

	}
    return 0;


}

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