n: 40 m: 627 packed: 13 density: 0 nodes: 0 solveTime: 31110 buildTime: 220 solved: true
{0,21,24}
{1,20,31}
{2,12,25}
{3,26,28}
{4,6,10}
{5,14,35}
{8,38,39}
{9,33,37}
{11,13,22}
{15,23,36}
{16,32,34}
{17,18,27}
{19,29,30}