n: 40 m: 249 packed: 13 density: 0 nodes: 0 solveTime: 520 buildTime: 30 solved: true
{0,20,37}
{1,3,7}
{2,31,35}
{4,19,29}
{5,28,39}
{6,14,22}
{8,9,13}
{10,12,27}
{11,33,34}
{15,18,23}
{16,21,25}
{17,24,26}
{30,32,36}