while True:
    try:
        httpcode = int(input())
        if httpcode == 200:
            print("OK")
        elif httpcode == 202:
            print("Accepted")
        elif httpcode == 400:
            print("Bad Request")
        elif httpcode == 403:
            print("Forbidden")
        elif httpcode == 404:
            print("Not Found")
        elif httpcode == 500:
            print("Internal Server Error")
        elif httpcode == 502:
            print("Bad Gateway")
    except EOFError:
        break