n: 40 m: 319 packed: 13 density: 0 nodes: 0 solveTime: 3280 buildTime: 60 solved: true
{0,20,30}
{1,32,36}
{2,12,27}
{3,26,28}
{4,24,35}
{5,34,37}
{6,14,16}
{7,29,31}
{8,19,39}
{9,15,25}
{10,11,38}
{13,17,21}
{18,22,23}