n: 40 m: 456 packed: 13 density: 0 nodes: 0 solveTime: 9980 buildTime: 120 solved: true
{0,17,18}
{1,9,23}
{2,5,6}
{3,21,39}
{4,8,11}
{7,19,35}
{10,16,34}
{13,29,31}
{14,28,38}
{15,30,32}
{20,26,37}
{22,24,36}
{25,27,33}