n: 40 m: 641 packed: 13 density: 0 nodes: 0 solveTime: 41540 buildTime: 240 solved: true
{0,4,21}
{1,34,35}
{2,12,17}
{3,25,26}
{5,29,37}
{6,19,28}
{7,22,39}
{8,15,30}
{9,24,27}
{10,13,31}
{11,16,18}
{14,33,38}
{20,23,36}