제출 #126906

4
2 3
4 2
3 4
1 1

1
2

1
4

cables cross: cable at A=4 with B=2 after B<=4

4
3 2
4 1
2 4
1 3

2
1
3

2
3
4

cables cross: cable at A=4 with B=1 after B<=4

5
2 3
4 4
5 1
1 5
3 2

3
1
2
3

3
1
3
5

cables cross: cable at A=5 with B=1 after B<=4