Speed Limit

http://poj.org/problem?id=2017

 1 #include<stdio.h>
 2 int main()
 3 {
 4     int n,mile,hour;
 5     while(~scanf("%d",&n)&&n!=-1)
 6     {
 7         int sum = 0,h = 0;
 8         while(n--)
 9         {
10             scanf("%d%d",&mile,&hour);
11             h = hour-h;
12             sum += mile*h;
13             h = hour;
14         }
15         printf("%d miles\n",sum);
16     }
17     return 0;
18 }
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posted @ 2013-08-02 09:36  N_ll  阅读(106)  评论(0)  编辑  收藏  举报