제출 #64742

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

curr: 6
NO

NO

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

YES
curr: 3
NO

YES
NO

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

YES
YES

NO
YES