n: 30 m: 137 packed: 10 density: 0 nodes: 0 solveTime: 200 buildTime: 20 solved: true
{0,18,20}
{1,8,19}
{2,7,29}
{3,12,21}
{4,24,28}
{5,10,22}
{6,25,26}
{9,13,14}
{11,16,23}
{15,17,27}