def read_input_samples(data_dict):
    """
    Function that takes only the input property from the dictionary
    Ignores train or test and just takes all inputs as equal
    :param data_dict: data dictionary with the full file input structure loaded
    :return: a dictionary of just input values

    >>> dict = {'train': [{'input': [[0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0]], 'output': [[0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0]]}, {'input': [[0, 0, 0, 8, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0]], 'output': [[0, 0, 0, 8, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 4, 0, 4, 0]]}], 'test': [{'input': [[0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0]], 'output': [[0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 7, 0, 0]]}]}
    >>> read_input_samples(dict)
    {0: [[0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0]], 1: [[0, 0, 0, 8, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0]], 2: [[0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0]]}

    """
    inputs_dict = {}
    i = 0
    for train_inputs in data_dict["train"]:
        inputs_dict[i] = train_inputs["input"]
        i += 1

    for test_inputs in data_dict["test"]:
        inputs_dict[i] = test_inputs["input"]
        i += 1

    return inputs_dict