n: 40 m: 627 packed: 13 density: 0 nodes: 0 solveTime: 29070 buildTime: 230 solved: true
{0,7,10}
{1,3,37}
{2,4,8}
{5,35,38}
{6,9,13}
{11,12,36}
{15,16,27}
{17,19,31}
{18,32,33}
{20,24,34}
{21,30,39}
{22,23,28}
{25,26,29}