제출 #126180

4 3
2 1
4 2
2 3

2 4 1 3 

4 2 1 3 

order constraint violated: 4 (pos 2) must be before 2 (pos 1)

4 3
4 3
3 1
2 4

2 3 4 1 

2 4 3 1 

order constraint violated: 4 (pos 3) must be before 3 (pos 2)

5 4
4 5
1 4
3 2
5 3

1 3 4 5 2 

1 4 5 3 2 

order constraint violated: 5 (pos 4) must be before 3 (pos 2)