17
13
1110000000111
1111000000111
1111100000111
1111100000111
1111110000111
1111110000111
1110111000111
1110111000111
1110011100111
1110011110111
1110001110111
1110000111111
1110000111111
1110000011111
1110000011111
1110000001111
1110000001111
