Input:
1      // the test contains 1 group of friends
6      // in this group there are 6 men
3      // here is the list of 1st man's friends (there is only one)
5      // the list of 2nd man's friends
1 4    // the list of 3rd man's friends
3 5 6  // and so on
2 4 6  // ...
4 5    // the list of 6th man's friends

Output:
4 1.166667 //here you should output the number of most popular man
and then his average distance.