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 C (GCC 5.4.1) (judge verdict: Accepted)

#include <stdio.h>
int main() {
  int a,b,c;
  int five,seven;
  five=0;
  seven=0;
  scanf("%d %d %d",&a,&b,&c);
  if(a==5) five++;
  if(a==7) seven++;
  if(b==5) five++;
  if(b==7) seven++;
  if(c==5) five++;
  if(c==7) seven++;
  if(five==2 && seven==1) {
    printf("YES\n");
  } else {
    printf("NO\n");
  }
  return 0;
}