import sys
import time


def Password(length):
    alphabet = list('0123456789qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM')
    passw = ''.join(alphabet[int(str(time.time()%1)[9:11]) % len(alphabet)] for x in range(length))

    return print(passw)


if __name__ == '__main__':
    Password(int(sys.argv[1]))