n: 30 m: 441 packed: 10 density: 0 nodes: 0 solveTime: 18630 buildTime: 110 solved: true
{0,6,28}
{1,8,29}
{2,3,7}
{4,5,12}
{9,16,18}
{10,15,17}
{11,23,25}
{13,14,20}
{19,21,22}
{24,26,27}