n: 40 m: 531 packed: 13 density: 0 nodes: 0 solveTime: 41730 buildTime: 170 solved: true
{0,7,15}
{1,16,17}
{2,4,5}
{3,6,25}
{8,12,19}
{9,10,13}
{14,21,23}
{18,24,35}
{20,22,39}
{26,32,33}
{27,28,29}
{30,34,36}
{31,37,38}