제출 #26694

2
6 6
2 1
5 3
5 2
6 1
3 1
1 4
2 1
1 2

NO
NO

YES
YES

2
6 6
2 1
5 1
3 4
1 6
1 3
2 4
3 1
1 2

NO
YES

YES
YES

2
4 1
3 1
7 6
5 1
5 2
1 4
1 6
4 2
7 1

YES
NO

YES
YES