n: 30 m: 420 packed: 10 density: 0 nodes: 0 solveTime: 21710 buildTime: 110 solved: true
{0,4,5}
{1,9,11}
{2,3,8}
{6,7,10}
{12,24,27}
{13,14,15}
{16,26,29}
{17,19,23}
{18,21,25}
{20,22,28}