n: 40 m: 477 packed: 13 density: 0 nodes: 0 solveTime: 83570 buildTime: 130 solved: true
{0,21,38}
{1,11,17}
{2,3,18}
{4,5,15}
{6,9,29}
{7,10,20}
{8,16,33}
{12,31,35}
{14,25,34}
{19,24,37}
{22,23,30}
{26,28,39}
{27,32,36}