n: 40 m: 661 packed: 13 density: 0 nodes: 0 solveTime: 71160 buildTime: 250 solved: true
{0,16,21}
{1,15,30}
{2,8,13}
{3,11,12}
{4,5,9}
{6,24,25}
{7,10,32}
{17,36,38}
{18,20,39}
{19,31,33}
{22,27,28}
{23,29,35}
{26,34,37}