SDAU 1007

Problem Description

A relay is a race for two or more teams of runners. Each member of a team runs one section of the race. Your task is to help to evaluate the results of a relay race.

You have to process several teams. For each team you are given a list with the running times for every section of the race. You are to compute the average time per kilometer over the whole distance. That's easy, isn't it?
So if you like the fun and challenge competing at this contest, perhaps you like a relay race, too. Students from Ulm participated e.g. at the "SOLA" relay in Zurich, Switzerland. For more information visit http://www.sola.asvz.ethz.ch/ after the contest is over.

 

Input

The first line of the input specifies the number of sections n followed by the total distance of the relay d in kilometers. You may safely assume that 1 <= n <= 20 and 0.0 < d < 200.0. Every following line gives information about one team: the team number t (an integer, right-justified in a field of width 3) is followed by the n results for each section, separated by a single space. These running times are given in the format "h:mm:ss" with integer numbers for the hours, minutes and seconds, respectively. In the special case of a runner being disqualified, the running time will be denoted by "-:--:--". Finally, the data on every line is terminated by a newline character. Input is terminated by EOF.

 

Output

For each team output exactly one line giving the team's number t right aligned in a field of width 3, and the average time for this team rounded to whole seconds in the format "m:ss". If at least one of the team's runners has been disqualified, output "-" instead. Adhere to the sample output for the exact format of presentation.

 

Sample Input

2[bk]12.5

[bk][bk]5[bk]0:23:21[bk]0:25:01

[bk]42[bk]0:23:32[bk]-:--:--

[bk][bk]7[bk]0:33:20[bk]0:41:35

 

Sample Output

[bk][bk]5:[bk]3:52[bk]min/km

[bk]42:[bk]-

[bk][bk]7:[bk]6:00[bk]min/km

題目大意：

接力賽，求隊伍平均時間。如果遇到 -：--：-- 取消比賽情況的，直接輸出 -

思路：

這個題沒啥，主要是卡輸入和輸出，隊伍的名字是三個字符長度，然後輸出時間之間 還有 ： 這個分隔符，顯然用cin 然後 gerchar（） 的話，可能會出現不可知的錯誤。用scanf 就比較簡單了

AC代碼

#include
#include
#include
#include
#include
#include
using namespace std;
int main()
{
    //freopen("r.txt", "r", stdin);
    int n,t,h,m,s,i,sum;
    char arr[100];
    double d;
    cin>>n>>d;
    while(~scanf("%d",&t))
    {
        int work=sum=0;
        for(i=0;i
        {
            if(scanf("%d:%d:%d",&h,&m,&s)==3)
            {
                sum+=h*3600+m*60+s;
            }
            else
            {
                gets(arr);
                work=1;
                break;
            }
        }
        if(work)
        {
            cout<<setw(3)<<t<<": -"<<endl;

        }
        else
        {
            sum=sum/d+0.5;

            cout<<setw(3)<<t<<": "<<sum/60<<":";
            if((sum`)<10)
                cout<<0;
            cout<<sum`<<" min/km"<<endl;
        }
    }

}