n: 40 m: 636 packed: 13 density: 0 nodes: 0 solveTime: 545210 buildTime: 240 solved: true
{0,10,17}
{1,2,11}
{3,5,31}
{4,9,12}
{6,13,25}
{7,14,16}
{8,15,18}
{20,30,34}
{21,32,33}
{22,36,37}
{23,28,39}
{24,29,35}
{26,27,38}