n: 40 m: 357 packed: 13 density: 0 nodes: 0 solveTime: 5500 buildTime: 70 solved: true
{0,20,33}
{1,26,30}
{2,9,29}
{3,4,14}
{5,36,37}
{6,16,31}
{7,23,28}
{8,11,24}
{12,22,35}
{13,18,21}
{15,17,25}
{19,27,39}
{32,34,38}