n: 30 m: 220 packed: 10 density: 0 nodes: 0 solveTime: 1560 buildTime: 30 solved: true
{0,9,20}
{1,4,26}
{2,10,12}
{3,7,8}
{5,11,23}
{6,17,25}
{13,18,29}
{14,16,24}
{15,27,28}
{19,21,22}