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 Haskell (GHC 7.10.3) (judge verdict: Accepted)

import Control.Applicative

myShow :: Int -> Int -> IO ()
myShow count5 count7 | count5 == 2 && count7 == 1 = putStrLn "YES"
                     | otherwise = putStrLn "NO"

main :: IO ()
main = do
    lst <- map read . words <$> getLine
    let count5 = sum $ [1 | x <- lst, x == 5]
        count7 = sum $ [1 | x <- lst, x == 7]
    myShow count5 count7