n: 40 m: 435 packed: 13 density: 0 nodes: 0 solveTime: 20700 buildTime: 110 solved: true
{0,11,18}
{1,7,23}
{2,8,39}
{3,25,36}
{4,5,6}
{9,33,38}
{10,19,21}
{12,34,37}
{13,14,27}
{15,16,26}
{17,20,24}
{22,28,30}
{29,31,35}