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", &a);
	scanf("%d", &b);
	scanf("%d", &c);
	int d=0,e=0;
	if (a == 5)
		d++;
	else if (a == 7)
		e++;
	if (b == 5)
		d++;
	else if (b == 7)
		e++;
	if (c == 5)
		d++;
	else if (c == 7)
		e++;
	if (d == 2 && e == 1)
		printf("YES");
	else
		printf("NO");
	return 0;
}