input: Write a python function to compute the sum of adjacent elements in a list and store the results in a dictionary.
  assert sum_adjacent([1, 4, 5, 6, 10]) == {(1, 4): 5, (4, 5): 9, (5, 6): 11, (6, 10): 16}
  assert sum_adjacent([3, 7, 2, 9]) == {(3, 7): 10, (7, 2): 9, (2, 9): 11}
  assert sum_adjacent([0, 1, -1, -2]) == {(0, 1): 1, (1, -1): 0, (-1, -2): -3}
output: def sum_adjacent(lst):
      result = {}
      for i in range(len(lst) - 1):
          result[(lst[i], lst[i + 1])] = lst[i] + lst[i + 1]
      return result