n: 40 m: 620 packed: 13 density: 0 nodes: 0 solveTime: 65550 buildTime: 230 solved: true
{0,6,26}
{1,21,31}
{2,20,22}
{3,4,14}
{5,17,19}
{7,11,15}
{8,29,30}
{9,13,32}
{10,18,34}
{12,28,39}
{16,27,37}
{23,33,35}
{24,25,36}