n: 30 m: 540 packed: 10 density: 0 nodes: 0 solveTime: 14970 buildTime: 170 solved: true
{0,16,20}
{1,5,7}
{2,10,28}
{3,8,9}
{4,13,14}
{6,19,21}
{11,25,26}
{12,22,29}
{15,17,18}
{23,24,27}