제출 #41693

2
8 5
4 2
6 2
6 1
4 1
4 3
2 1
1 2

NO
YES

YES
YES

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

YES
YES

NO
YES

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

YES
YES
NO

YES
NO