제출 #167391

3
2 3
3 1
1 2

1
2

1
3

cables cross: cable at A=3 with B=1 after B<=2

3
3 1
1 2
2 3

1
1

1
3

cables cross: cable at A=3 with B=1 after B<=3

3
2 3
1 1
3 2

1
1

1
3

cables cross: cable at A=3 with B=2 after B<=3