n: 40 m: 612 packed: 13 density: 0 nodes: 0 solveTime: 26950 buildTime: 220 solved: true
{0,1,5}
{2,24,27}
{3,6,9}
{4,18,30}
{7,11,23}
{8,31,33}
{10,12,13}
{14,16,17}
{19,20,26}
{21,28,34}
{22,36,39}
{25,32,37}
{29,35,38}