n: 40 m: 321 packed: 13 density: 0 nodes: 0 solveTime: 2850 buildTime: 60 solved: true
{0,21,22}
{1,30,38}
{2,19,39}
{3,16,23}
{4,35,37}
{5,7,11}
{6,13,20}
{8,10,33}
{9,27,36}
{12,32,34}
{14,17,24}
{15,18,28}
{25,29,31}