제출 #46885

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

6 5
[ [ 1, 2 ], [ 1, 3 ], [ 4, 5 ], [ 5, 6 ], [ 6, 4 ] ]
NO

NO

2
2 1
1 2
6 2
2 1
3 1

2 1
[ [ 1, 2 ] ]
6 2
[ [ 2, 1 ], [ 3, 1 ] ]
YES
NO

YES
YES

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

2 1
[ [ 2, 1 ] ]
5 3
[ [ 3, 1 ], [ 4, 1 ], [ 2, 1 ] ]
YES
NO

YES
YES