제출 #122216

1

3
1 3

1
1 3

2

5
1 2
1 3
2 3

3
1 2
1 3
2 3

4

9
1 2
1 3
2 3
1 2
3 1
3 2
1 2
1 3
2 3
2 1
3 1
2 3
1 2
1 3
2 3

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