n: 40 m: 678 packed: 13 density: 0 nodes: 0 solveTime: 83810 buildTime: 270 solved: true
{0,6,15}
{1,2,3}
{4,7,8}
{5,19,38}
{9,12,34}
{10,13,25}
{11,27,31}
{14,21,33}
{16,23,24}
{17,32,39}
{18,30,35}
{20,22,28}
{29,36,37}