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: Runtime Error)

using System;
class Program{
  static void Main(){
    
    string[] length = new string[3];
    for(int i=0;1<3;i++){
      length[i] = Console.ReadLine();}
    
    int count5=0;
    int count7=0;
    //5が二つ、7が一つになっているかの確認
    for(int i=0;i<3;i++){
      if(length[i].Length==5){count5++;}
      if(length[i].Length==7){count7++;}}
    
    if(count5==2&&count7==1){Console.WriteLine("Yes");}
    else{Console.WriteLine("No");}
  }
}