PS:输入麻烦...我还以为是输入一个就输出一个...后来看了大神的才知道....暴力破解了...
代码;
#include "stdio.h" int main(){ double sum1=0,a,b; while(~scanf("%*s %lf %lf",&a,&b)) sum1+=a*b; printf("%.1lf\n",sum1); return 0; }