n: 40 m: 309 packed: 13 density: 0 nodes: 0 solveTime: 2680 buildTime: 50 solved: true
{0,11,19}
{1,7,36}
{2,30,31}
{3,8,26}
{4,21,35}
{5,6,10}
{9,16,22}
{12,29,33}
{13,14,23}
{15,27,28}
{17,24,25}
{18,32,38}
{20,34,37}