[0,1,2,2,3,3,4,4,5,5,6,6,7,7,7,7,8,8,8,9,9,10,10, 10,11,11,11,12,12,12,12,13,13,13,14,14,14,14,15, 15,15,16,16,16,17,17,17,18,18,18,18,19,19,19,19, 20,20,21,20,21,22,22,22,21,23,23,23,24,24,24,24, 24,25,25,25,25]