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: Wrong Answer)

using System;
using System.Collections.Generic;
using System.Linq;

class Program{

  static string ans = "No";

  static int Main() {

    string[] nyu = Console.ReadLine().Split(' ');
    int a = int.Parse(nyu[0]);
    int b = int.Parse(nyu[1]);
    int c = int.Parse(nyu[2]);

    // ここまで入力

    if (a == b || b == c || a > 0) {
      ans = "Yes";
    }

    Console.WriteLine("{0}", ans);

    return 0;
  }

}