n: 40 m: 686 packed: 13 density: 0 nodes: 0 solveTime: 34170 buildTime: 270 solved: true
{0,5,11}
{1,2,8}
{3,4,18}
{6,19,22}
{7,21,30}
{9,27,35}
{10,32,39}
{12,17,24}
{13,20,26}
{14,36,38}
{15,28,34}
{16,25,31}
{23,29,33}