杭电ACM2061--Treasure the new start, freshmen!

http://acm.hdu.edu.cn/showproblem.php?pid=2061

这题很简单。注意换行。

<span style="font-size:18px;">#include <stdlib.h>
#include <stdio.h>
int main()
{
	int s,t,i;
	char a[50];
	double x,y;
	double m,n;
	bool f;
	double z;
	scanf("%d",&s);
	while (s--)
	{
		f = true;
		m = 0;n = 0;
		scanf("%d",&t);
		for (i=0;i<t;i++)
		{
			scanf("%s%lf%lf",a,&x,&y);
			if (y<60)
				f = false;
			m = m+x;
			n = n+y*x;
		}
		z = n/m;
		if (f)
			printf("%.2lf\n",z);
		else
			printf("Sorry!\n");
		if (s)
			printf("\n");
	}
	return 0;
}</span>