n: 30 m: 304 packed: 10 density: 0 nodes: 0 solveTime: 1800 buildTime: 60 solved: true
{0,20,21}
{1,11,17}
{2,3,7}
{4,8,19}
{5,27,28}
{6,12,13}
{9,10,26}
{14,15,16}
{18,22,25}
{23,24,29}