def perfect_number(x):
    divisors = [num for num in range(1, x // 2 + 1) if x % num == 0]

    sum = 0
    for divisor in divisors:
        sum = sum + divisor

    if sum == x:
        return "The number {} is perfect".format(x)
    else:
        return "The number {} is not perfect".format(x)


if __name__ == "__main__":
    broj = eval(input())
    print(perfect_number(broj))