n: 40 m: 305 packed: 13 density: 0 nodes: 0 solveTime: 3520 buildTime: 50 solved: true
{0,1,4}
{2,10,11}
{3,25,33}
{5,29,30}
{6,16,19}
{7,34,35}
{8,14,39}
{9,13,18}
{12,31,38}
{17,20,32}
{21,26,28}
{22,36,37}
{23,24,27}