n: 40 m: 619 packed: 13 density: 0 nodes: 0 solveTime: 72040 buildTime: 220 solved: true
{0,6,7}
{1,15,33}
{2,5,10}
{4,8,29}
{9,26,27}
{11,12,19}
{13,14,24}
{16,22,28}
{17,20,37}
{18,21,25}
{23,31,34}
{30,32,39}
{35,36,38}