n: 40 m: 685 packed: 13 density: 0 nodes: 0 solveTime: 495330 buildTime: 250 solved: true
{0,13,29}
{1,4,7}
{2,3,14}
{5,19,31}
{6,21,32}
{9,25,26}
{10,15,34}
{11,12,17}
{16,18,35}
{20,30,38}
{22,27,36}
{23,28,39}
{24,33,37}