[0,1,1,2,2,3,3,4,1,2,2,3,3,4,4,5,2,3,3,4,4,5,5,6, 3,4,4,5,5,6,6,7,2,3,3,4,4,5,5,6,3,4,4,5,5,6,6,7,4, 5,5,6,6,7,7,8,5,6,6,7,7,8,8,9,3,4,4,5,5,6,6,7,4,5, 5,6,6,7,7,8,5,6,6,7,7,8,8,9]