n: 40 m: 669 packed: 13 density: 0 nodes: 0 solveTime: 32530 buildTime: 260 solved: true
{0,1,5}
{2,18,30}
{3,16,26}
{6,25,27}
{7,9,11}
{8,15,20}
{10,12,22}
{13,28,32}
{14,33,36}
{17,21,38}
{19,31,35}
{23,29,34}
{24,37,39}