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)

list = gets.split("\s").map {|s|s.to_i}
result = true
idx = list.index(5)

if(idx!=nil)then
  list.delete_at(idx)
else
  result = false
end

idx = list.index(5)
if(idx!=nil)then
  list.delete_at(idx)
else
  result = false
end

if(list[0]!=7)then
  result = false
end

if(result==true)then
  puts "YES"
else
  puts "NO"
end