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 9.2.1) (judge verdict: Accepted)

#include<iostream>
using namespace std;

int main() {
	int a, b, c;
	cin >> a >> b >> c;
	int count5 = 0;
	int count7 = 0;

	if (a == 5) count5++;
	if (a == 7) count7++;
	if (b == 5) count5++;
	if (b == 7) count7++;
	if (c == 5) count5++;
	if (c == 7) count7++;
	
	if ((count5 == 2) && (count7 == 1)) {
		cout << "YES";
	}
	else {
		cout << "NO";
	}
}