20
16
1110000000000011
1110000000000011
1111000000000011
1111100000000011
1101100000000011
1100110000000011
1100011000000011
1100011000000011
1100001100000011
1100000110000011
1100000110000011
1100000011000011
1100000001100011
1100000001100011
1100000000110011
1100000000011011
1100000000011111
1100000000001111
1100000000000111
1100000000000111
