6
2 1
0 2
0 0
2 2
0 2
0 0
3 2
0 3
0 0
2 0
9 4
2 3
4 0
0 5
6 0
0 7
8 0
0 9
0 0
0 0
15 4
8 0
0 0
0 9
0 0
15 6
0 0
4 0
2 13
0 0
14 12
5 0
3 0
10 11
0 0
0 7
15 3
8 11
0 0
0 9
0 0
15 6
0 0
4 0
2 13
0 0
14 12
5 0
3 0
10 0
0 0
0 7