n: 40 m: 525 packed: 13 density: 0 nodes: 0 solveTime: 22740 buildTime: 160 solved: true
{0,21,28}
{1,3,5}
{2,4,14}
{7,9,11}
{8,24,37}
{10,19,32}
{12,20,39}
{13,30,31}
{15,25,36}
{16,34,38}
{17,18,33}
{22,26,27}
{23,29,35}