杭电acm1036

http://acm.hdu.edu.cn/showproblem.php?pid=1036

原本是水题不解释……可是nc的wa了n次，orz了，输出的地方少了个冒号---------

题目说的就是接力赛的速度计算，如果是-：--：--就不算速度，如果是其他的就都化成秒加起来，如果再四舍五入得到答案

#include<stdio.h>
#include<string.h>
int main()
{
    double d,sum,i;
    int team,n,flag=0,s;
    char time[10000];
    scanf("%d%lf",&n,&d);
    while(scanf("%d",&team)!=EOF)
    {
       sum=0.0;
       flag=1;
       for(i=0;i<n;i++)
       {
          scanf("%s",time);
          if(strcmp(time,"-:--:--")==0)
          {
            flag=0;
          }
          else {
               if(time[1]==':')
               sum+=(time[0]-'0')*3600.0+(time[2]-'0')*600.0+(time[3]-'0')*60.0+(time[5]-'0')*10.0+(time[6]-'0')*1.0;
               else sum+=(time[0]-'0')*36000.0+(time[1]-'0')*3600.0+(time[3]-'0')*600.0+(time[4]-'0')*60.0+(time[6]-'0')*10.0+(time[7]-'0')*1.0;
               }
       }
       if(flag==0)
       {
          printf("%3d: -\n",team);
          continue;
       }
          s=(int)(sum/d+0.5);
          printf("%3d: %d:%02d min/km\n",team,s/60,s%60);
    }
    return 0;
}