n: 40 m: 255 packed: 13 density: 0 nodes: 0 solveTime: 1950 buildTime: 40 solved: true
{0,28,37}
{1,20,22}
{2,5,19}
{3,17,27}
{4,23,30}
{6,34,38}
{7,14,31}
{8,18,26}
{9,25,35}
{10,21,24}
{12,16,39}
{13,32,33}
{15,29,36}