|시간 제한||메모리 제한||제출||정답||맞은 사람||정답 비율|
|1 초||128 MB||26||7||5||31.250%|
The task is to write a program that outputs the smallest possible number s for an input natural number n. The number s must have the following properties:
A value of natural number n (0 < n < 500000) is input from the keyboard.
The number s as described above must be output on the screen. If it is not possible to find the corresponding value of s to the given value of n, output one word "NAV".