n: 40 m: 631 packed: 13 density: 0 nodes: 0 solveTime: 34060 buildTime: 230 solved: true
{0,10,11}
{1,14,21}
{2,3,5}
{4,13,32}
{6,9,28}
{7,8,18}
{15,26,30}
{16,33,37}
{17,20,24}
{19,27,35}
{22,29,39}
{23,31,38}
{25,34,36}