n: 40 m: 220 packed: 13 density: 0 nodes: 0 solveTime: 620 buildTime: 40 solved: true
{0,16,28}
{1,13,36}
{2,25,27}
{3,11,20}
{4,22,35}
{5,21,24}
{6,10,18}
{7,14,37}
{8,23,38}
{9,15,29}
{12,26,34}
{17,19,31}
{30,33,39}