n: 40 m: 662 packed: 13 density: 0 nodes: 0 solveTime: 37930 buildTime: 250 solved: true
{0,1,9}
{3,22,33}
{4,17,21}
{5,7,15}
{6,10,32}
{8,11,25}
{12,19,30}
{13,16,29}
{14,34,35}
{18,24,27}
{20,36,39}
{23,26,38}
{28,31,37}