20
15
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110000000000011
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110000000000011
110000000000011
110000000000011
110000000000011
110000000000011
110000000000011
110000000000011
110000000000011
110000000000011
110000000000011
110000000000011
110000000000011
111000000000111
011000000000110
011110000011110
001111111111100
000011111110000
