def resolve():
    import sys

    input = sys.stdin.readline
    MOD = 998244353
    INF = float("inf")
    m = int(input())
    if m == 0:
        print("a")
        return
    print("co", end="")
    x = m
    dp = [1, 1, 0]
    y = 1
    while x:
        b = 1 << int(y**0.5).bit_length()
        if y > 2:
            while dp[0] < b:
                print("c", end="")
                dp[0] += 1
            while dp[1] < y:
                print("o", end="")
                dp[1] += dp[0]
        if x & 1:
            print("n", end="")
            dp[2] += dp[1]

        if y == 1:
            print("o", end="")
            dp[1] += 1
        elif y == 2:
            print("co", end="")
            dp[0] += 1
            dp[1] += dp[0]
        x >>= 1
        y <<= 1
    # print(dp)


if __name__ == "__main__":
    resolve()