제출 #90457

1
4 7
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2 3
3 2
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3 4
1

1

1
8 4
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0 4
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2 3
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0 5
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1 5
2 4
3 5
2 6
IMPOSSIBLE

IMPOSSIBLE

2
3 9
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9 3
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1 2
2 1
3 2
2 3
1
0 1
1 0
2 1
1 2
1 1
2 0
3 1
2 2
2

1
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