n: 40 m: 453 packed: 13 density: 0 nodes: 0 solveTime: 6300 buildTime: 110 solved: true
{0,20,34}
{1,19,37}
{2,14,27}
{3,9,32}
{4,11,18}
{5,6,33}
{7,8,16}
{12,24,38}
{13,31,35}
{15,22,36}
{17,23,28}
{21,25,30}
{26,29,39}