n: 40 m: 556 packed: 13 density: 0 nodes: 0 solveTime: 26310 buildTime: 180 solved: true
{0,25,37}
{1,22,24}
{2,3,6}
{4,13,29}
{5,17,19}
{7,11,20}
{8,34,35}
{9,26,28}
{10,14,31}
{12,21,32}
{15,33,36}
{16,18,39}
{27,30,38}