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++14 (GCC 5.4.1) (judge verdict: Accepted)

#include <iostream>
#include <array>
using namespace std;

int main() {
    array<int, 3> strsize;
    cin >> strsize[0] >> strsize[1] >> strsize[2];
    int cnt5 = 0, cnt7 = 0;

    for (int i = 0; i < strsize.size(); i++) {
        if (strsize[i] == 5) cnt5++;
        else if (strsize[i] == 7) cnt7++;
    }

    if (cnt5 == 2 && cnt7 == 1) cout << "YES" << endl;
    else cout << "NO" << endl;

    return 0;
}