Problem:
Score : 100 points

Problem Statement

Shichi-Go-San (literally "Seven-Five-Three") is a traditional event in a certain country to celebrate the growth of seven-, five- and three-year-old children.

Takahashi is now X years old. Will his growth be celebrated in Shichi-Go-San this time?

Constraints

1 ≤ X ≤ 9

X is an integer.

Input

Input is given from Standard Input in the following format:

X

Output

If Takahashi's growth will be celebrated, print YES; if it will not, print NO.

Sample Input 1

5

Sample Output 1

YES

The growth of a five-year-old child will be celebrated.

Sample Input 2

6

Sample Output 2

NO

See you next year.

Solution in C++14 (GCC 5.4.1) (judge verdict: Accepted)

#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
using namespace std;
typedef vector<int> vi;
#define mp make_pair
#define MAX 20000
typedef long long ll;
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
typedef vector<long long> vll;
typedef vector<ii> vii;
#define EPS 1e-9
#define LSOne(S) (S & (-S))
#define INF 1000*1000*1000+889
const int N = 1e5+10;
int main(void)
{
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    int x;
    cin>>x;
    if(x == 7 || x == 5 || x == 3)
        puts("YES");
    else
        puts("NO");
}