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: Accepted)

#include<iostream>
#include<functional>
#include<utility>
#include<cmath>
#include<iomanip>
#include<algorithm>
#include<string>
#include<vector>
using namespace std;
int n, m,a;
string s;

int main() {
	cin >> n >> m >> a;
	if (n!=m)
	{
		cout << "No" << endl;
		return 0;
	}
	if (m!=a)
	{
		cout << "No" << endl;
		return 0;
	}
	cout << "Yes" << endl;
	return 0;
}