n: 40 m: 376 packed: 13 density: 0 nodes: 0 solveTime: 8800 buildTime: 80 solved: true
{0,20,25}
{1,4,30}
{2,28,36}
{3,7,13}
{5,26,34}
{6,31,32}
{8,18,39}
{9,22,33}
{10,11,16}
{12,15,38}
{14,21,35}
{17,27,29}
{23,24,37}