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 OCaml (4.02.3) (judge verdict: Accepted)

let _ =
    let p = Scanf.scanf "%d %d %d\n" (fun a b c ->
        List.sort compare [a;b;c]) in
    let f = function
        true -> print_endline "YES"
        | false -> print_endline "NO" in
    f ((List.nth p 0) == 5 && (List.nth p 1) == 5 && (List.nth p 2) == 7)