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 Perl (v5.18.2) (judge verdict: Wrong Answer)

#!/usr/bin/env perl
use strict;
use warnings;
use utf8;
use feature qw/say/;

my @ns = @ARGV;
@ns = sort { $a <=> $b } @ns;
if ($ns[0] == 5 && $ns[1] == 5 && $ns[2] == 7) {
    say 'YES';
} else {
    say 'NO';
}