input: Write a python function to find the minimum value in a 2D scalar field and return its indices.
  assert findMin([[3, 4, 2], [1, 6, 5], [7, 8, 9]]) == (1, 0)
  assert findMin([[10, 20, 30], [40, 50, 60], [70, 80, 5]]) == (2, 2)
  assert findMin([[1, 2], [3, 4], [0, 5]]) == (2, 0)
output: def findMin(field):
      min_value = float('inf')
      min_indices = (0, 0)
      for i in range(len(field)):
          for j in range(len(field[i])):
              if field[i][j] < min_value:
                  min_value = field[i][j]
                  min_indices = (i, j)
      return min_indices