n: 30 m: 540 packed: 10 density: 0 nodes: 0 solveTime: 25260 buildTime: 170 solved: true
{0,19,25}
{1,2,4}
{3,10,13}
{5,7,12}
{6,9,16}
{8,18,20}
{11,22,26}
{14,28,29}
{15,17,27}
{21,23,24}