제출 #97799

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

Yes
Yes
Yes

YES
YES
YES

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

Yes
Yes
Yes

YES
YES
YES

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

Yes
No

YES
NO