20
15
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110000000011100
110000000001110
110000000000110
110000000000110
110000000000110
110000000001110
110000000011100
111111111111000
111111111111100
110000000001110
110000000000111
110000000000011
110000000000011
110000000000011
110000000000111
110000000001110
111111111111100
111111111110000
