n: 40 m: 338 packed: 13 density: 0 nodes: 0 solveTime: 2320 buildTime: 60 solved: true
{0,12,29}
{1,11,30}
{2,26,27}
{3,22,38}
{4,7,9}
{5,13,18}
{6,24,39}
{8,21,31}
{10,14,34}
{15,19,35}
{16,23,25}
{17,20,36}
{28,32,37}