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;
         
        class Program{
        	static void Main(string[] args){
            	string[] input = Console.ReadLine().Split(' ');
              	int[] count = new int[10];
              	for(int i = 0;i < input.Length;i ++){
                	int check = int.Parse(input[i]);
                  	count[check - 1] ++;
                }
              
              	if(count[4] == 2 && count[6] == 1){
                	Console.WriteLine("YES");
                }else Console.WriteLine("NO");
            }
        }