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

namespace paiza2
{
    class Program
    {
        static int Main(string[] args)
        {
            var read = Console.ReadLine();
            var split = read.Split(' ');
            string a = split[0];
            string b = split[1];
            string c = split[2];
            if (a == "5" || a == "7")
                if (b == "5" || b == "7")
                    if (c == "5" || c == "7")
                        if (Int32.Parse(a) + Int32.Parse(b) + Int32.Parse(c) == 17)
                        {
                            Console.WriteLine("YES");
                            return 0;
                        }
            Console.WriteLine("NO");
            return 0;
         
        }
    }
}