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)


fiv = 0
seven = 0
a,b,c = gets.chomp.split(' ').map{|n| n.to_i}


if a == 5 then
  fiv+=1
end

if b == 5 then
  fiv+=1
end

if c == 5
  fiv+=1
end

if a == 7
  seven+=1
end

if b == 7
  seven+=1
end

if c == 7
  seven+=1
end

if seven == 1 && fiv == 2
  puts "YES"
else
  puts "NO"
end