HDU 2090 算菜价

#include <stdio.h>
int main ( )
{
    double sum = 0,unit,count;
    char s[1000];
    while ( scanf ( "%s%lf%lf" , s, &count,&unit ) != EOF )
          sum += count * unit ;
    printf ( "%.1lf\n" , sum );
    return 0;
}