n: 40 m: 638 packed: 13 density: 0 nodes: 0 solveTime: 70050 buildTime: 240 solved: true
{0,1,15}
{2,3,10}
{4,16,35}
{5,14,19}
{6,22,26}
{7,30,36}
{9,18,39}
{11,32,38}
{12,31,33}
{13,23,28}
{17,24,34}
{20,25,27}
{21,29,37}