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[3],i,j;
	scanf("%d %d %d",&a[0],&a[1],&a[2]);
	if(a[0]+a[1]+a[2]!=17){
		printf("NO\n");
	}else{
		for(i=0;i<3;i++){
			if(a[i]==5){
				for(j=0;j<3;j++){
					if(a[j]==7){
						printf("YES\n");
						return 0;
					}
				}
			}
		}
		printf("NO\n");
	}
	return 0;
}