n: 40 m: 687 packed: 13 density: 0 nodes: 0 solveTime: 24390 buildTime: 270 solved: true
{0,5,36}
{1,3,20}
{2,10,38}
{4,18,30}
{6,8,31}
{7,21,29}
{11,26,37}
{12,28,33}
{13,24,25}
{14,17,32}
{15,16,39}
{19,23,35}
{22,27,34}