import random
password_strenghh =int(input("enter the defficulty from 1 to 10 : "))

letter_lower = "abcdefghijklmnopqrstwxyz"
letter_upper = letter_lower.upper()
numbers = "1234567890"
special="!@#$%^&*()_+{}"
password=[]
def randomchoice(x) :
     return random.choice(x)
difficulty=password_strenghh*2

for i in range(difficulty):
    password.append(randomchoice(letter_lower))
    password.append(randomchoice(letter_upper))
    password.append(randomchoice(numbers))
    password.append(randomchoice(special))

password2=''.join(password)
print(password2)