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: Wrong Answer)

#include <stdio.h>
int main(){
	int a,b,c;
	int x5=0,x7=0;
	scanf("%d",&a);
	scanf("%d",&b);
	scanf("%d",&c);
  
  	switch(a){
      case 5:
        x5++;
      case 7:
        x7++;
    }
  
   	switch(b){
      case 5:
        x5++;
      case 7:
        x7++;
    }
  
   	switch(c){
      case 5:
        x5++;
      case 7:
        x7++;
    }
  
  if(x5==2 && x7==1){
    	printf("YES");
  } else {
    	printf("NO");
  }
}