n: 40 m: 548 packed: 13 density: 0 nodes: 0 solveTime: 22930 buildTime: 180 solved: true
{0,12,20}
{1,3,26}
{2,9,19}
{4,29,35}
{5,18,22}
{6,8,16}
{7,10,11}
{13,21,30}
{14,33,36}
{15,23,31}
{17,38,39}
{24,28,32}
{25,27,34}