n: 40 m: 748 packed: 13 density: 0 nodes: 0 solveTime: 262030 buildTime: 320 solved: true
{0,8,36}
{1,4,7}
{2,14,17}
{3,24,25}
{6,9,18}
{10,28,39}
{11,21,22}
{12,15,16}
{13,26,34}
{19,29,38}
{20,23,30}
{27,31,35}
{32,33,37}