1842262_ac_0ms_24k.c

北大大牛代码 1240道题的原代码 超级权威

# include <stdio.h>

void main()
{
 int n, m, i, speed, time, s, tmp;
 
 while(scanf("%d",&n)==1&&n!=-1)
 {
  s = tmp = 0;
  for(i = 0; i < n; i++)
    {
     scanf("%d %d",&speed,&time);
     s += speed*(time-tmp);
     tmp = time;
    }
   printf("%d miles\n",s); 
 }
}