n: 40 m: 506 packed: 13 density: 0 nodes: 0 solveTime: 25450 buildTime: 150 solved: true
{0,1,7}
{2,4,9}
{3,10,19}
{5,8,11}
{12,14,15}
{13,22,24}
{16,28,38}
{17,29,35}
{18,30,37}
{20,25,39}
{21,26,27}
{23,31,32}
{33,34,36}