n: 40 m: 479 packed: 13 density: 0 nodes: 0 solveTime: 25810 buildTime: 130 solved: true
{0,24,28}
{1,14,21}
{2,22,23}
{3,5,26}
{4,15,19}
{6,10,20}
{7,13,18}
{8,9,12}
{16,29,37}
{17,32,39}
{25,34,35}
{27,30,33}
{31,36,38}