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++;
	}
	else if (A == 7) {
		count7++;
	}
	if (B == 5) {
		count5++;
	}
	else if (B == 7) {
		count7++;
	}
	if (C == 5) {
		count5++;
	}
	else if (C == 7) {
		count7++;
	}

	if (count5 == 2 && count7 == 1) {
		cout << "YES" << endl;
	}
	else {
		cout << "NO" << endl;
	}
	return 0;

}