Average is not Fast Enough!
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.
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.
2 12.5 5 0:23:21 0:25:01 42 0:23:32 -:--:-- 7 0:33:20 0:41:35
5: 3:52 min/km 42: - 7: 6:00 min/km