n: 40 m: 177 packed: 13 density: 0 nodes: 0 solveTime: 350 buildTime: 20 solved: true
{0,9,15}
{1,14,37}
{2,20,31}
{3,4,18}
{5,21,38}
{6,13,32}
{7,23,29}
{8,25,33}
{10,16,35}
{11,30,36}
{12,34,39}
{17,22,24}
{19,26,27}