제출 #156089

5 5
1 4
4 5 4 1 3
4 4 1 3 2
1 5
2 5 2

0

5
4
1
3
2

participant says impossible but solution exists

7 7
1 3
1 3
4 5 7 4 3
1 7
2 3 1
1 2
3 5 7 6

0

2
5
7
4
6
3
1

participant says impossible but solution exists