n: 40 m: 605 packed: 13 density: 0 nodes: 0 solveTime: 103710 buildTime: 210 solved: true
{0,19,25}
{1,4,8}
{2,13,24}
{3,11,23}
{5,31,38}
{6,9,16}
{7,10,28}
{14,20,22}
{15,17,18}
{21,29,34}
{26,35,39}
{27,32,36}
{30,33,37}