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,i=0;
   int cnt_7,cnt_5;
   while(i<2){
	 scanf("%d\n",&a);
     if(a==7&&cnt_7==0)
       cnt_7++;
     else if(a==7&&cnt_7==1){
       printf("NO");
       return 0;
     }
     else if(a==5&&cnt_5==2){
       printf("NO");
       return 0;
     }
     else if(a==5&&cnt_5!=2){
       cnt_5++;
     }
     else{
		printf("NO");
        return 0;
     }
     i++;
   }
     printf("YES");
}