n: 30 m: 581 packed: 10 density: 0 nodes: 0 solveTime: 74670 buildTime: 200 solved: true
{0,15,17}
{1,9,13}
{2,3,20}
{4,5,6}
{7,12,16}
{8,10,19}
{11,27,28}
{14,18,29}
{21,22,26}
{23,24,25}