n: 40 m: 636 packed: 13 density: 0 nodes: 0 solveTime: 42300 buildTime: 230 solved: true
{0,19,37}
{1,11,22}
{2,4,14}
{3,30,38}
{5,16,31}
{6,35,36}
{7,12,24}
{8,33,34}
{9,10,13}
{15,21,29}
{17,18,23}
{20,28,39}
{25,26,27}