n: 40 m: 173 packed: 13 density: 0 nodes: 0 solveTime: 700 buildTime: 20 solved: true
{0,20,24}
{1,23,39}
{2,36,38}
{3,29,33}
{4,7,16}
{5,17,25}
{6,12,30}
{8,27,35}
{9,10,22}
{11,14,32}
{13,19,21}
{15,18,37}
{26,28,31}