def compare_3PC_keys(key1, key2) -> int:
    """
    Return >0 if key2 is greater than key1, <0 if lesser, 0 otherwise
    """
    if key1[0] == key2[0]:
        return key2[1] - key1[1]
    else:
        return key2[0] - key1[0]
Return >0 if key2 is greater than key1, <0 if lesser, 0 otherwise