n: 40 m: 290 packed: 13 density: 0 nodes: 0 solveTime: 3370 buildTime: 50 solved: true
{0,20,21}
{1,11,27}
{2,15,25}
{3,29,38}
{4,18,32}
{5,12,14}
{6,24,28}
{7,17,26}
{8,22,36}
{9,16,23}
{10,13,37}
{30,31,33}
{34,35,39}