n: 40 m: 470 packed: 13 density: 0 nodes: 0 solveTime: 25530 buildTime: 130 solved: true
{0,26,30}
{1,5,18}
{2,29,33}
{3,31,34}
{4,20,24}
{6,12,25}
{7,19,35}
{8,28,36}
{9,13,27}
{10,21,32}
{14,17,22}
{15,16,37}
{23,38,39}