n: 40 m: 102 packed: 13 density: 0 nodes: 0 solveTime: 180 buildTime: 0 solved: true
{0,11,21}
{1,4,24}
{2,14,26}
{3,31,33}
{5,16,22}
{6,32,34}
{7,8,23}
{9,29,38}
{10,17,28}
{12,19,27}
{13,15,37}
{18,25,36}
{20,35,39}