n: 40 m: 375 packed: 13 density: 0 nodes: 0 solveTime: 6600 buildTime: 80 solved: true
{0,24,28}
{1,26,29}
{2,5,34}
{3,10,20}
{6,30,31}
{7,21,27}
{8,33,37}
{9,11,22}
{12,15,16}
{13,14,39}
{17,25,32}
{18,35,36}
{19,23,38}