n: 40 m: 214 packed: 13 density: 0 nodes: 0 solveTime: 1070 buildTime: 30 solved: true
{0,13,17}
{1,18,21}
{2,3,16}
{4,19,30}
{5,22,26}
{6,31,33}
{7,25,32}
{8,20,23}
{9,10,24}
{11,27,39}
{12,29,38}
{14,36,37}
{15,28,34}