n: 50 m: 560 packed: 16 density: 0 nodes: 0 solveTime: 28110 buildTime: 180 solved: true
{0,19,23}
{1,33,40}
{2,34,44}
{3,29,45}
{4,5,42}
{6,9,37}
{7,43,49}
{8,10,47}
{11,15,28}
{12,36,48}
{13,17,38}
{14,21,22}
{16,24,35}
{18,41,46}
{20,26,27}
{31,32,39}