HDU 2090 算菜价

这道题就是  ~  大  ~~ 水  ~~~ 题

#include <iostream>#include <cstdio>#include <cstring>#include <string>#include <algorithm>using namespace std;int main(){    char a[105];    double num,money,sum=0;    while(scanf("%s%lf%lf",a,&num,&money)!=EOF)    {        sum+=num*money;    }    printf("%.1lf\n",sum);    return 0;}