n: 40 m: 260 packed: 13 density: 0 nodes: 0 solveTime: 1030 buildTime: 40 solved: true
{0,18,38}
{1,19,23}
{2,24,27}
{3,34,39}
{4,13,37}
{5,28,32}
{6,22,30}
{7,10,36}
{8,12,21}
{9,14,31}
{15,16,17}
{20,29,33}
{25,26,35}