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# (Mono 4.6.2.0) (judge verdict: Runtime Error)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ABC080A
{
    class Program
    {
        static void Main(string[] args)
        {
            int n, a, b, x;

            var word = Console.ReadLine().Split(' ');

           n = int.Parse(word[0]);
           a = int.Parse(word[1]);
           b = int.Parse(word[2]);


			if (n * a <= b)
				x = n * a;
			else
				x = b;
           
             

            Console.WriteLine(x);
            Console.ReadKey();
        }
    }
}