from re import VERBOSE


def asp(pointer, main_stack, aux_stack):
    """
    Asp
    If the main stack is non-empty, drop the top element.
    """
    if VERBOSE:
        print("Asp", main_stack, aux_stack)
    if main_stack:
        main_stack = main_stack[:-1]
    return(pointer, main_stack, aux_stack)