제출 #192367

7 3
1 4
3 3 6 4
3 5 6 4

0

1
2
3
5
7
6
4

participant says impossible but solution exists

8 4
4 1 2 5 7
4 4 3 2 5
1 2
1 4

0

1
4
6
8
3
2
5
7

participant says impossible but solution exists