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==5 || A==7){
	    if(A==5 && (B==5 || B==7)){
	        if(B==5 && C==7)
		        printf("YES\n");
		    else if(B==7 && C==5)
		        printf("YES\n");
		    else
		        printf("NO\n");
	    }
		else if(A==7 && B==5 && C==5)
		    printf("YES\n");
		else
		    printf("NO\n");
	}
    else
        printf("NO\n");

	return 0;
}