n: 40 m: 492 packed: 13 density: 0 nodes: 0 solveTime: 17900 buildTime: 140 solved: true
{0,20,29}
{1,24,32}
{2,30,37}
{3,11,23}
{4,27,33}
{5,6,16}
{7,14,15}
{8,10,13}
{9,18,28}
{17,19,35}
{21,34,36}
{22,31,39}
{25,26,38}