n: 30 m: 301 packed: 10 density: 0 nodes: 0 solveTime: 3790 buildTime: 60 solved: true
{0,18,21}
{1,7,8}
{2,11,14}
{3,6,22}
{4,9,12}
{5,10,19}
{13,16,17}
{15,24,27}
{20,23,25}
{26,28,29}