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 <bits/stdc++.h>
#define x1 xxx
#define y1 yyy
#define x2 xx
#define y2 yy
using namespace std;
typedef long long ll;
vector<ll> dis;
int main()
{
   ll a,b,c;
   cin>>a>>b>>c;
   ll f=0,s=0;
   if(a==5)f++;
   if(a==7)s++;
   if(b==5)f++;
   if(b==7)s++;
   if(c==5)f++;
   if(c==7)s++;
   if(f==2&&s==1)cout<<"YES"<<endl;
   else cout<<"NO"<<endl;
        return 0;
}