n: 40 m: 548 packed: 13 density: 0 nodes: 0 solveTime: 37700 buildTime: 170 solved: true
{0,19,22}
{1,10,25}
{2,3,9}
{4,5,7}
{8,23,29}
{11,12,13}
{14,27,35}
{15,21,30}
{16,36,39}
{17,18,26}
{20,24,28}
{31,32,34}
{33,37,38}