n: 40 m: 320 packed: 13 density: 0 nodes: 0 solveTime: 3540 buildTime: 60 solved: true
{0,22,28}
{1,25,29}
{2,5,10}
{3,33,37}
{4,6,24}
{7,8,27}
{9,12,17}
{11,32,38}
{13,16,23}
{14,21,35}
{15,30,36}
{18,19,20}
{26,31,34}