n: 40 m: 386 packed: 13 density: 0 nodes: 0 solveTime: 6590 buildTime: 90 solved: true
{0,1,15}
{2,4,7}
{3,19,31}
{5,24,33}
{8,18,32}
{9,14,16}
{10,27,34}
{11,22,36}
{12,17,30}
{13,35,39}
{20,23,26}
{21,28,29}
{25,37,38}