sier3.ifs

Lin-Kernighan heuristic for the TSP and minimum weight perfect matching

3
 0.5   0.0   0.0   0.5   0.25   0.5    1
 0.5   0.0   0.0   0.5   0.00   0.0    1
 0.5   0.0   0.0   0.5   0.50   0.0    1