제출 #28666

4
1 1 6 1
3 1 5 1
1 1 12 1
4 1 6 1

0

1

4
2 1 12 1
10 1 12 1
1 1 2 1
9 1 12 1

2

1

5
1 1 3 1
4 1 8 1
5 1 12 1
3 1 9 1
4 1 7 1

4

2