n: 40 m: 687 packed: 13 density: 0 nodes: 0 solveTime: 37100 buildTime: 280 solved: true
{0,13,31}
{1,5,12}
{2,9,29}
{4,25,32}
{6,8,10}
{7,30,35}
{11,14,24}
{15,23,28}
{16,27,37}
{17,33,34}
{18,22,39}
{19,26,38}
{20,21,36}