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 JavaScript (node.js v5.12) (judge verdict: Wrong Answer)

function Main(input) {
  const args = input.split(" ");
  if (valid(args[0]) || args[1] || args[2]) {
    return;
  }

  console.log(args[0] === args[1] && args[0] === args[2] ? 'Yes' : 'No');
}

function valid(num) {
  if (num < 1 || 100 < num) {
    return false;
  }
  return true;
}


Main(require("fs").readFileSync("/dev/stdin", "utf8"));