import sys
input = sys.stdin.readline
ins = lambda: input().rstrip()
ini = lambda: int(input().rstrip())
inm = lambda: map(int, input().rstrip().split())
inl = lambda: list(map(int, input().split()))
out = lambda x, s='\n': print(s.join(map(str, x)))

n = ini()
ans = ["o"] * n
a = b = 1
while b <= n:
    ans[b-1] = ans[b-1].upper()
    a, b = b, a + b
out(ans, "")