n: 30 m: 426 packed: 10 density: 0 nodes: 0 solveTime: 42870 buildTime: 110 solved: true
{0,9,14}
{1,8,10}
{2,11,25}
{3,4,7}
{5,26,27}
{6,16,21}
{12,13,28}
{15,20,29}
{17,23,24}
{18,19,22}