제출 #67509

1

15
1 3

1
1 3

2

15
1 2
1 3
2 3

3
1 2
1 3
2 3

3

15
1 3
1 2
3 2
1 3
2 1
2 3
1 3

7
1 3
1 2
3 2
1 3
2 1
2 3
1 3