n: 40 m: 400 packed: 13 density: 0 nodes: 0 solveTime: 14720 buildTime: 90 solved: true
{0,18,19}
{1,2,13}
{3,4,24}
{5,33,35}
{7,30,39}
{8,9,15}
{10,23,34}
{11,29,32}
{12,20,22}
{14,27,38}
{16,17,25}
{21,28,31}
{26,36,37}