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(void){
	int A, B, C;
  
  	scanf("%d %d %d", &A, &B, &C);
  	
  	if((A+B+C) == 17){
  		if(A == 5){
     		if((B == 5) || (B == 7)){
				printf("%s%s%s", "Y", "E", "S");
      		}else{
             	printf("%s%s", "N", "O");
            }
    	}else if(A == 7){
        	if(B == 5){
             	printf("%s%s%s", "Y", "E", "S");
            }else{
              	printf("%s%s", "N", "O");
            }
        }else{
         	printf("%s%s", "N", "O");
        }
    }else{
    	printf("%s%s", "N", "O");
    }
  
	return 0; 
}