n: 40 m: 399 packed: 13 density: 0 nodes: 0 solveTime: 6610 buildTime: 90 solved: true
{0,13,20}
{1,4,15}
{2,7,31}
{3,21,33}
{5,6,10}
{8,17,25}
{9,12,18}
{14,22,38}
{16,19,24}
{23,27,32}
{26,29,39}
{28,36,37}
{30,34,35}