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()
{
	int n5 = 0, n7 = 0, i, A[4];
	scanf("%d %d %d", &A[1], &A[2], &A[3]);
	for (i = 1; i < 4; i++)
	{
		if (A[i] == 5)n5++;
		if (A[i] == 7)n7++;
	}
	if (n5 == 2 && n7 == 1)printf("YES");
	else printf("NO");
	return 0;
}