n: 40 m: 570 packed: 13 density: 0 nodes: 0 solveTime: 33870 buildTime: 190 solved: true
{0,19,24}
{1,23,34}
{2,9,31}
{3,8,18}
{4,10,36}
{5,6,11}
{7,13,22}
{12,14,17}
{15,26,37}
{16,20,32}
{21,25,28}
{27,30,39}
{29,33,35}