[0,0,1,1,2,3,3,4,5,5,6,6,7,8,8,9,10,10,11,11,12, 13,13,14,15,15,16,17,17,18,18,19,20,20,21,22,22, 23,23,24,25,25,26,27,27,28,29,29,30,30,31,32,32, 33,34,34,35,35,36,37,37,38,39,39,40,41,41,42,42, 43,44,44,45,46,46]