n: 40 m: 495 packed: 13 density: 0 nodes: 0 solveTime: 37300 buildTime: 140 solved: true
{0,18,26}
{1,23,39}
{2,3,17}
{5,6,9}
{7,16,22}
{8,11,37}
{10,19,32}
{12,15,27}
{13,14,38}
{20,24,30}
{21,25,28}
{29,34,36}
{31,33,35}