The input contains a single integer *a* (1 ≤ *a* ≤ 40).

Output a single string.
The input contains a single integer *a* (1 ≤ *a* ≤ 40).
import random
import string
N=int(input())
print (''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(N)))