20 20
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10000100011110011111
10101101101001100101
10101000100000000100
10011000010101111010
00100110000110001010
01111001100010001010
11101100000100111101
01000101001000101110
00000010001011001110
10011101010111011000
01100010100001001010
00110010000100010111
00110000000110010100
10000011000100000000
10000001000100011000
00100000110101010111
00010101001001110100
10011110100101101100
11000010010100010100