easter_gift....

def outofstock(gifts_list, command):
    gift = command[1]
    for i in range(len(gifts_list)):
        if gift == gifts_list[i]:
            gifts_list[i] = "None"
    return gifts_list


def required(gifts_list, command):
    gift = command[1]
    index = int(command[2])
    if 0 <= index < len(gifts_list):
        gifts_list[index] = gift
    return gifts_list


def justincase(gifts_list, command):
    gift = command[1]
    gifts_list[-1] = gift
    return gifts_list


def final_print(gifts_list):
    for i in gifts_list:
        if i != "None":
            print(i, end=" ")


gifts_list = input().split()
while True:
    command = input().split()
    if command[0].startswith("No"):
        break
    if command[0] == "OutOfStock":
        gifts_list = outofstock(gifts_list, command)
    elif command[0] == "Required":
        gifts_list = required(gifts_list, command)
    elif command[0] == "JustInCase":
        gifts_list = justincase(gifts_list, command)
final_print(gifts_list)