input: Write a function to compute the sum of all values in a given dictionary where keys are strings and values are integers. Return the total sum as an integer.
  
  assert compute_dict_sum({"a": 5, "b": 10, "c": 15}) == 30
  assert compute_dict_sum({"x": 1, "y": 2, "z": 3}) == 6
  assert compute_dict_sum({}) == 0
  assert compute_dict_sum({"p": 100, "q": 200, "r": 300}) == 600
  assert compute_dict_sum({"alpha": 1, "beta": 2}) == 3
output: def compute_dict_sum(d):
      return sum(d.values())