n: 40 m: 158 packed: 13 density: 0 nodes: 0 solveTime: 270 buildTime: 20 solved: true
{0,18,21}
{1,15,25}
{2,5,29}
{3,8,24}
{4,36,37}
{7,9,16}
{10,23,35}
{11,13,22}
{12,26,39}
{14,17,32}
{19,31,34}
{20,28,30}
{27,33,38}