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 ABC042_B
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] info = Console.ReadLine()
                .Split(' ')
                .Select(str => int.Parse(str))
                .ToArray();

            int n = info[0];
            int l = info[1];

            List<string> strs = new List<string>();
            for (int i = 0; i < n; i++)
            {
                string str = Console.ReadLine();
                strs.Add(str);
            }

            strs.Sort();
            Console.WriteLine(string.Join("", strs));
        }
    }
}