[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -7]
[0, 1, 2, 3, 4, 5, 6, 3, 8, 9, -7]
[0, 1, 2, 3, 4, 5, 6, 3, 8, 3, -3]
[0, 1, 2, 2, 4, 5, 6, 3, 8, 3, -3]
[0, 1, -1, 2, 4, 5, 6, 2, 8, 3, -3]
[0, 1, -1, 2, 1, 5, 6, -1, 8, 3, -3]
[0, 1, -1, 2, 1, 5, 6, -1, 1, 3, -3]
IMPOSSIBLE