n: 40 m: 253 packed: 13 density: 0 nodes: 0 solveTime: 3710 buildTime: 40 solved: true
{0,1,20}
{2,25,27}
{3,14,30}
{4,16,39}
{5,11,26}
{6,15,37}
{7,17,22}
{8,29,38}
{9,10,12}
{13,19,24}
{18,23,33}
{21,31,35}
{32,34,36}