hdu 2090 算菜价

#include<stdio.h>
int main()
{
	double a,b,sum=0;
	char str[20];
	while(scanf("%s%lf%lf",str,&a,&b)!=EOF)
	{
		sum+=a*b;
	}
	printf("%0.1lf\n",sum);
	return 0;
}