5 12
1 1 19.0
2 1 12.0
5 1 12.0
2 2 21.0
3 2 12.0
5 2 12.0
1 3 21.0
3 3 16.0
1 4 21.0
4 4  5.0
4 5 21.0
5 5 18.0