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: Wrong Answer)

package main

import "fmt"

func main() {
    var a, b, c string
    fmt.Scan(&a, &b, &c)

  five := make([]string, 0, 3)
  seven := make([]string, 0, 3)

  for _, s := range []string{a,b,c} {
    if len(s) == 5 {
      five = append(five, s)
    }
    if len(s) == 7 {
      seven = append(seven, s)
    }
  }

  if len(five) == 2 && len(seven) == 1 {
    fmt.Println("YES")
    return
  }
  fmt.Println("NO")
}