n: 40 m: 321 packed: 13 density: 0 nodes: 0 solveTime: 3530 buildTime: 60 solved: true
{0,25,35}
{1,26,32}
{2,8,11}
{3,7,29}
{4,5,27}
{6,14,37}
{9,19,33}
{10,15,18}
{12,28,38}
{13,24,31}
{16,17,30}
{20,22,23}
{21,34,36}