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 practice6
{
    class MainClass
    {
        public static void Main(string[] args)
        {
            string c = Console.ReadLine().ToString();
            string A = "5 5 7";
            string B = "5 7 5";
            string C = "7 5 5";
            if (c == A)
                Console.WriteLine("YES");
            else if (c == B)
                Console.WriteLine("YES");
            else if (c == C)
                Console.WriteLine("YES");
            else
                Console.WriteLine("NO");

        }
    }
}