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 Rust (1.15.1) (judge verdict: Accepted)

use std::io;

fn read_line()-> String {
    let mut s = String::new();
    let _ = io::stdin().read_line(&mut s).unwrap();
    s
}

fn count(s: &str,s_cnt: String) -> i64 {
	let mut c = 0;
	let s_iter = s.trim().split("").collect::<Vec<&str>>();
	for i in s_iter.iter() {
		if i.to_string() == s_cnt {
			c+=1;
		}
	}
	c
}

fn main() {
	let s = read_line();
	let five = count(&s,"5".to_string());
	let seven = count(&s,"7".to_string());
	if five == 2 && seven == 1 {
		println!("YES");
	}else {
		println!("NO")
	}
}