n: 40 m: 684 packed: 13 density: 0 nodes: 0 solveTime: 42080 buildTime: 300 solved: true
{0,3,5}
{1,2,7}
{4,33,36}
{6,31,38}
{8,22,26}
{9,21,37}
{10,11,27}
{12,28,30}
{13,20,29}
{14,23,35}
{15,16,24}
{17,25,32}
{18,19,39}