n: 40 m: 397 packed: 13 density: 0 nodes: 0 solveTime: 7570 buildTime: 80 solved: true
{0,20,22}
{1,3,13}
{2,5,11}
{4,33,38}
{7,25,28}
{8,31,34}
{9,16,18}
{10,23,29}
{12,17,30}
{14,19,36}
{15,27,39}
{21,26,35}
{24,32,37}