n: 40 m: 180 packed: 13 density: 0 nodes: 0 solveTime: 2040 buildTime: 30 solved: true
{0,24,28}
{1,18,37}
{2,26,38}
{3,11,12}
{4,17,22}
{5,14,19}
{6,10,13}
{7,31,32}
{8,15,39}
{9,29,30}
{16,35,36}
{20,25,33}
{23,27,34}