n: 40 m: 140 packed: 13 density: 0 nodes: 0 solveTime: 1900 buildTime: 10 solved: true
{0,26,31}
{1,15,18}
{2,4,20}
{3,17,29}
{5,22,39}
{6,21,28}
{7,16,19}
{8,10,30}
{9,11,33}
{12,24,32}
{13,14,36}
{23,25,34}
{27,35,38}