제출 #114451

2
3 2
3 1
2 3
3 3
2 1
1 3
2 3

YES
YES

YES
NO

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

YES
YES

NO
YES

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

YES
YES

YES
NO