제출 #36667

3
2 1
2 1
3 3
1 3
2 3
1 2
4 1
2 1

YES
NO
NO

YES
NO
YES

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

YES
NO
NO

YES
NO
YES

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

YES
NO
NO

YES
NO
YES