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: Wrong Answer)

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

namespace ABC042A
{
    class Program
    {
        static void Main(string[] args)
        {
            int A, B, C,x;
            String X;
            
            var word = Console.ReadLine().Split(' ');
            A = int.Parse(word[0]);
            B = int.Parse(word[1]);
            C = int.Parse(word[2]);
            x = A + B + C;
            if(x==17&&(A == 5&&(B==5||C==5)||B==5&&C==5))
            {
                X="Yes";  
            }
            else { X = "No"; }
            Console.WriteLine(X);
            Console.ReadKey();

        }
    }
}