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;

public class Program {

        public static void Main(string[] args) {

            string[] strArray = Console.ReadLine().Split(' ');

            int[] intArray = { int.Parse(strArray[0]), int.Parse(strArray[1]), int.Parse(strArray[2]) };

            Array.Sort(intArray);

            if(intArray[0] == 5 && intArray[1] == 5 && intArray[2] == 7) {

                Console.WriteLine("YES");

            } else {

                Console.WriteLine("NO");

            }

        }

    }