n: 40 m: 239 packed: 13 density: 0 nodes: 0 solveTime: 930 buildTime: 40 solved: true
{0,1,17}
{2,31,38}
{3,21,25}
{4,7,14}
{5,16,24}
{6,26,27}
{8,30,36}
{9,15,37}
{10,22,29}
{11,23,33}
{12,20,32}
{13,19,39}
{18,28,35}