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 Go (1.6) (judge verdict: Accepted)

package main

import "fmt"

func main() {
	a := make([]int, 3)
	for i := range a {
		fmt.Scan(&a[i])
	}

	cnt := make(map[int]int)

	for _, v := range a {
		cnt[v] += 1
	}

	if cnt[5] == 2 && cnt[7] == 1 {
		fmt.Println("YES")
	} else {
		fmt.Println("NO")
	}
}