friends

friends = input().split(", ")
command = input().split()

while not command[0] == "Report":
    if command[0] == "Blacklist":
        if command[1] in friends:
            for i in range(len(friends)):
                if friends[i] == command[1]:
                    friends[i] = "Blacklisted"
                    print(f"{command[1]} was blacklisted.")
        else:
            print(f"{command[1]} was not found.")
    elif command[0] == "Error":
        if 0 <= int(command[1]) < len(friends) and not friends[int(command[1])] == "Blacklisted" and not friends[int(command[1])] == "Lost":
            print(f"{friends[int(command[1])]} was lost due to an error.")
            friends[int(command[1])] = "Lost"
    elif command[0] == "Change":
        if 0 <= int(command[1]) < len(friends):
            print(f"{friends[int(command[1])]} changed his username to {command[2]}.")
            friends[int(command[1])] = command[2]
    command = input().split()

print(f"Blacklisted names: {friends.count('Blacklisted')}")
print(f"Lost names: {friends.count('Lost')}")
print(" ".join(friends))