Problem:
Score : 100 points

Problem Statement

Iroha loves Haiku. Haiku is a short form of Japanese poetry. A Haiku consists of three phrases with 5, 7 and 5 syllables, in this order.

To create a Haiku, Iroha has come up with three different phrases. These phrases have A, B and C syllables, respectively. Determine whether she can construct a Haiku by using each of the phrases once, in some order.

Constraints

1≦A,B,C≦10

Input

The input is given from Standard Input in the following format:

A B C

Output

If it is possible to construct a Haiku by using each of the phrases once, print YES (case-sensitive). Otherwise, print NO.

Sample Input 1

5 5 7

Sample Output 1

YES

Using three phrases of length 5, 5 and 7, it is possible to construct a Haiku.

Sample Input 2

7 7 5

Sample Output 2

NO

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;

class Program
{
    static void Main(string[] args)
    {
        Console.Write(IrohaAndHaiku_ABCEdition());
    }

    private static string IrohaAndHaiku_ABCEdition()
    {
        //句の文字数情報を読み込む
        int[] ku = new int[3];
        string[] line = Console.ReadLine().Split(' ');

        for (int i = 0; i < line.Length; i++)
        {
            ku[i] = int.Parse(line[i]);
        }

        //ソート
        Array.Sort(ku);

        //5が2つ、7が1つないと俳句作れない
        for (int i = 0; i < 2; i++)
        {
            if (ku[i] != 5) return "NO";
        }
        if (ku[2] != 7) return "NO";

        //条件を満たしたので俳句ができる
        return "YES";
    }
}