n: 40 m: 668 packed: 13 density: 0 nodes: 0 solveTime: 21230 buildTime: 250 solved: true
{0,2,3}
{4,21,35}
{5,30,38}
{6,36,37}
{7,11,31}
{8,12,28}
{9,14,26}
{10,16,34}
{13,20,22}
{15,32,39}
{17,27,33}
{18,23,29}
{19,24,25}