20
17
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11110000000001111
11110000000001111
11110000000001111
11011000000011011
11011000000011011
11011000000011011
11001100000110011
11001100000110011
11001100000110011
11001100000110011
11000110001100011
11000110001100011
11000110001100011
11000011011000011
11000011011000011
11000011011000011
11000001110000011
11000001110000011
11000001110000011
