Grid size: 6
Number of obstacles: 6
  (1, 1) radius = 0.5
  (2, 4) radius = 1.5
  (3, 2) radius = 1.0
  (4, 6) radius = 0.5
  (5, 4) radius = 1.0
  (6, 2) radius = 0.5
Your program returned the turning point (-1, -1).
Correct: There is no valid path