제출 #32623

6
5 1 6 1
4 1 9 1
2 1 9 1
10 1 12 1
1 1 8 1
6 1 12 1

3

2

7
9 1 10 1
1 1 2 1
6 1 12 1
4 1 12 1
3 1 11 1
6 1 10 1
2 1 12 1

2

1

8
7 1 8 1
4 1 10 1
7 1 12 1
1 1 8 1
1 1 8 1
4 1 7 1
7 1 12 1
1 1 3 1

3

2