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# (Mono 4.6.2.0) (judge verdict: Accepted)

// Undone
using System;
using System.Linq;
using System.Collections.Generic;
using System.Collections;
public class Program {
  public static void Main() {
    int[] abc = ReadIntArray();
    Console.WriteLine(abc.All(i => i == abc[0]) ? "Yes" : "No");
  }

  private static List<int> _var;
  public static int cin() { if (_var == null || _var.Count() == 0) { _var = Console.ReadLine().Split(' ').Select(int.Parse).ToList<int>(); } int ans = _var[0]; _var.RemoveAt(0); return ans; }
  public static void Swap<T>(ref T a, ref T b) {T temp = a;a = b;b = temp;}
  public static string ReadStr() { return Console.ReadLine(); }
  public static int ReadInt() { return int.Parse(Console.ReadLine()); }
  public static double ReadDouble() { return double.Parse(Console.ReadLine()); }
  public static long ReadLong() { return long.Parse(Console.ReadLine()); }
  public static char ReadChar() { return Console.ReadLine()[0]; }
  public static string[] ReadStringArray() { return Console.ReadLine().Split(' '); }
  public static int[] ReadIntArray() { return Console.ReadLine().Split(' ').Select(int.Parse).ToArray(); }
  public static double[] ReadDoubleArray() { return Console.ReadLine().Split(' ').Select(double.Parse).ToArray(); }
  public static long[] ReadLongArray() { return Console.ReadLine().Split(' ').Select(long.Parse).ToArray(); }
  public static char[] ReadCharArray() { return Console.ReadLine().ToArray(); }
  public static string[] ReadCharStringArray() { return Console.ReadLine().ToCharArray().Select(c => c.ToString()).ToArray(); }
}