n: 40 m: 478 packed: 13 density: 0 nodes: 0 solveTime: 27070 buildTime: 140 solved: true
{0,3,27}
{1,4,6}
{2,26,30}
{5,13,21}
{7,33,39}
{8,28,29}
{9,10,15}
{11,12,23}
{14,31,36}
{16,19,32}
{17,24,25}
{18,34,37}
{20,35,38}