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>

#define INPUT_MAX	3

int main(void)
{
	int num[INPUT_MAX];
	int five = 0;
	int seven = 0;
	int idx;

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

	for (idx = 0; idx < INPUT_MAX; idx++) {
		if (num[idx] == 5) {
			five++;
		}
		if (num[idx] == 7) {
			seven++;
		}
	}

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

	return 0;
}