input: def compute_dict_sum(input_dict):
      """ Return the sum of all values in the given dictionary (string → integer).
      >>> compute_dict_sum({"a": 5, "b": 10, "c": 15})
      30
      >>> compute_dict_sum({"x": 2, "y": 8, "z": 12})
      22
      """
output:     return sum(input_dict.values())