n: 40 m: 329 packed: 13 density: 0 nodes: 0 solveTime: 4930 buildTime: 60 solved: true
{0,18,19}
{1,17,31}
{2,5,29}
{3,12,25}
{4,13,24}
{6,10,22}
{7,15,37}
{8,20,38}
{9,14,16}
{11,23,28}
{21,27,35}
{26,36,39}
{32,33,34}