def popcount(n):
    cnt = 0
    while n:
        cnt += n & 1
        n //= 2
    return cnt

N = int(input())
if popcount(N) == 1:
    print(1)
else:
    if N % 2:
        print(2)
    else:
        while N % 2 == 0:
            N //= 2
        if popcount(N) == 1:
            print(2)
        else:
            print(3)