n: 40 m: 680 packed: 13 density: 0 nodes: 0 solveTime: 145210 buildTime: 270 solved: true
{0,22,29}
{1,2,8}
{3,23,27}
{4,5,15}
{6,13,37}
{7,11,33}
{9,24,30}
{10,32,39}
{12,25,35}
{16,26,34}
{17,19,21}
{18,28,31}
{20,36,38}