n: 40 m: 603 packed: 13 density: 0 nodes: 0 solveTime: 32650 buildTime: 220 solved: true
{0,21,33}
{1,20,31}
{2,3,5}
{4,8,10}
{6,29,30}
{7,11,16}
{9,13,37}
{12,24,25}
{14,17,27}
{15,18,32}
{19,23,26}
{28,38,39}
{34,35,36}