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 Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)

import java.util.Scanner;

public class Main{
    public static void main(String[] args) {
        int a, b, c;
        int five = 0;
        int seven = 0;
        Scanner scanner = new Scanner(System.in);
        a = scanner.nextInt();
        b = scanner.nextInt();
        c = scanner.nextInt();

        if(a == 5){
            five++;
        }else if(a == 7){
            seven++;
        }
        if(b == 5){
            five++;
        }else if(b == 7){
            seven++;
        }
        if(c == 5){
            five++;
        }else if(c == 7){
            seven++;
        }

        if(five == 2){
            if(seven == 1){
                System.out.println("YES");
            }else{
                System.out.println("NO");
            }
        }else{
            System.out.println("NO");
        }
    }
}