n: 40 m: 221 packed: 13 density: 0 nodes: 0 solveTime: 1110 buildTime: 30 solved: true
{0,23,24}
{1,20,25}
{2,37,39}
{3,9,38}
{4,22,26}
{5,7,30}
{6,10,16}
{8,15,29}
{11,28,32}
{12,33,34}
{13,27,35}
{17,18,21}
{19,31,36}