n: 40 m: 228 packed: 13 density: 0 nodes: 0 solveTime: 1140 buildTime: 30 solved: true
{0,15,16}
{1,10,30}
{2,28,33}
{3,35,38}
{4,12,34}
{5,18,22}
{6,13,39}
{8,25,36}
{9,21,27}
{11,26,31}
{14,23,32}
{17,24,29}
{19,20,37}