Problem:
Score : 100 points

Problem Statement

You are given three integers A, B and C.

Determine if there exists an equilateral triangle whose sides have lengths A, B and C.

Constraints

All values in input are integers.

1 \leq A,B,C \leq 100

Input

Input is given from Standard Input in the following format:

A B C

Output

If there exists an equilateral triangle whose sides have lengths A, B and C, print Yes; otherwise, print No.

Sample Input 1

2 2 2

Sample Output 1

Yes

There exists an equilateral triangle whose sides have lengths 2, 2 and 2.

Sample Input 2

3 4 5

Sample Output 2

No

There is no equilateral triangle whose sides have lengths 3, 4 and 5.

Solution in C++14 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include <bits/stdc++.h>
using namespace std;
typedef vector<int> vi;
typedef vector<vector<long long> > vvll;
typedef vector<pair<int, int> > vpii;
typedef pair<int, int> pii;
typedef long long ll;
typedef pair<ll, ll> pll;
#define INF 1000000000
#define MOD 1000000007
#define EPSILON 0.00001
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define p_q priority_queue
 
#define FOR(i, a, b) for (int i=(a); i<=(b); i++)
#define F0R(i, a) for (int i=0; i<(a); i++)
#define RFOR(i, a, b) for (int i=(a); i >= b; i--)
 
#define MN 200005


int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int a, b, c;
    cin >> a >> b >> c;
    if(a == b && b == c){
        cout << "YES\n";
    } else{
        cout << "NO\n";
    }

    return 0;
}