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: Wrong Answer)

#include<iostream>
using namespace std;
int main(){
    string A, B, C;
    cin >> A >> B >> C;
    if(A.size()==7){
        if(B.size()==5 && C.size()==5){
            cout << "YES" << endl;
        }
        else{
            cout << "NO" << endl;
        }
    }
    else if(C.size()==7){
        if(A.size()==5 && B.size()==5){
            cout << "YES" << endl;
        }
        else{
            cout << "NO" << endl;
        }
    }
    else{
        cout << "NO" << endl;
    }
}