n: 40 m: 655 packed: 13 density: 0 nodes: 0 solveTime: 17530 buildTime: 250 solved: true
{0,2,21}
{1,10,16}
{3,14,23}
{4,18,32}
{6,25,31}
{7,13,26}
{8,11,39}
{9,22,30}
{12,17,20}
{15,19,37}
{24,27,33}
{28,29,38}
{34,35,36}