n: 30 m: 423 packed: 10 density: 0 nodes: 0 solveTime: 16640 buildTime: 110 solved: true
{0,18,23}
{1,25,28}
{2,11,26}
{3,7,29}
{4,5,22}
{6,9,17}
{8,10,20}
{12,13,16}
{14,24,27}
{15,19,21}