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 Ruby (2.3.3) (judge verdict: Accepted)

arr = gets.strip.split(" ").map!(&:to_i)
five_counter = 0
seven_counter = 0
3.times do |i|
  if(arr[i] == 5) then
    five_counter += 1
  elsif(arr[i] == 7) then
    seven_counter += 1
  end
end

if(five_counter == 2 && seven_counter == 1) then
  puts "YES"
else
  puts "NO"
end