https://judge.softuni.org/Contests/Practice/Index/2302#0
05. Programming Fundamentals Final Exam
01. Activation Keys

raw_key = input()
while True:
    command = input().split(">>>")
    if command[0] == 'Generate':
        print(f"Your activation key is: {raw_key}")
        break
    elif command[0] == 'Flip':
        if command[1] == 'Upper':
            start_index = int(command[2])
            end_index = int(command[3])
            raw_key = raw_key[:start_index] + raw_key[start_index:end_index].upper() + raw_key[end_index:]
            print(raw_key)
        elif command[1] == 'Lower':
            start_index = int(command[2])
            end_index = int(command[3])
            raw_key = raw_key[:start_index] + raw_key[start_index:end_index].lower() + raw_key[end_index:]
            print(raw_key)
    elif command[0] == 'Slice':
        start_index = int(command[1])
        end_index = int(command[2])
        raw_key = raw_key[:start_index] + raw_key[end_index:]
        print(raw_key)
    elif command[0] == 'Contains':
        substring = command[1]
        if substring in raw_key:
            print(f'"{raw_key} contains {substring}')
        else:
            print("Substring not found!")