"""main.py"""


def main():
    """Output the smaller index."""
    sample = input()
    exclude_string = "ccw"
    from_left_index = sample.find(exclude_string) + 1
    from_right_index = ''.join(list(reversed(sample))).find("wcc") + 1
    print(min(from_left_index, from_right_index))


if __name__ == "__main__":
    main()