n: 40 m: 257 packed: 13 density: 0 nodes: 0 solveTime: 2790 buildTime: 40 solved: true
{0,18,28}
{1,20,25}
{2,8,22}
{3,4,7}
{5,24,36}
{6,23,33}
{9,11,32}
{10,13,31}
{12,35,38}
{14,16,37}
{15,27,29}
{17,19,26}
{21,34,39}