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 input[3];
	int i;
	int five_number = 0;
	int seven_number = 0;

	scanf("%d %d %d", &input[0], &input[1], &input[2]);

	for(i = 0; i < 3; i++){
		if(5 == input[i]){
			five_number++;
		}
		if(7 == input[i]){
			seven_number++;
		}
	}

	if(2 == five_number && 1 == seven_number){
		printf("YES\n");
	}else{
		printf("NO\n");
	}

	return 0;
}