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;
class A{
  static void Main(string[] args){
    string[] arr = Console.ReadLine().Split(' ');
    int N = int.Parse(arr[0]);
    var arr2 = new string[N];
    for(int i=0;i<N;i++){
      arr2[i] = Console.ReadLine();}
    
    Array.Sort(arr2);
    Console.WriteLine(string.Concat(arr2));
  }
}

//このソースコードは参考主がいます。