n: 40 m: 662 packed: 13 density: 0 nodes: 0 solveTime: 43090 buildTime: 260 solved: true
{0,1,5}
{2,34,36}
{3,33,38}
{4,9,37}
{6,14,25}
{7,8,23}
{10,21,26}
{11,12,39}
{13,16,22}
{15,27,28}
{17,20,24}
{18,19,32}
{29,30,35}