n: 40 m: 342 packed: 13 density: 0 nodes: 0 solveTime: 4380 buildTime: 80 solved: true
{0,21,37}
{1,3,4}
{2,8,20}
{5,17,39}
{6,31,36}
{7,23,30}
{9,14,38}
{10,16,29}
{11,13,32}
{12,15,26}
{18,22,25}
{19,24,34}
{27,28,35}