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;
using System.Linq;

namespace AtCoder.ABC042
{
    class ProblemA
    {
        static void Main()
        {
            var a = ReadIntArray();
            var answer = a.Count(v => v == 5) == 2 && a.Count(v => v == 7) == 1 ? "YES" : "NO";
            Console.WriteLine(answer);
        }

        public static string ReadLine() => Console.ReadLine();

        public static int ReadInt() => int.Parse(ReadLine());

        public static int[] ReadIntArray() => ReadLine().Split(' ').Select(v => int.Parse(v)).ToArray();
    }
}