n: 40 m: 307 packed: 13 density: 0 nodes: 0 solveTime: 3510 buildTime: 60 solved: true
{0,3,35}
{1,20,33}
{2,15,21}
{4,5,29}
{6,27,30}
{7,22,34}
{8,23,26}
{9,10,25}
{11,13,39}
{12,17,18}
{14,32,37}
{16,28,31}
{19,36,38}