n: 40 m: 657 packed: 13 density: 0 nodes: 0 solveTime: 45500 buildTime: 250 solved: true
{0,15,28}
{1,19,34}
{2,3,33}
{4,27,39}
{5,11,14}
{6,25,32}
{7,30,37}
{8,16,17}
{9,21,36}
{10,20,38}
{12,18,31}
{13,23,26}
{22,29,35}