n: 40 m: 661 packed: 13 density: 0 nodes: 0 solveTime: 47320 buildTime: 260 solved: true
{0,37,39}
{1,20,28}
{2,3,8}
{4,6,11}
{5,32,38}
{7,29,30}
{9,19,24}
{10,12,26}
{13,34,35}
{14,21,36}
{15,23,33}
{16,18,22}
{17,25,27}