Problem:
Range

Write a program which reads three integers a, b and c, and prints "Yes" if a < b < c, otherwise "No".

Input

Three integers a, b and c separated by a single space are given in a line.

Output

Print "Yes" or "No" in a line.

Constraints

0 ≤ a, b, c ≤ 100

Sample Input 1

1 3 8

Sample Output 1

Yes

Sample Input 2

3 8 1

Sample Output 2

No

Solution in C# (judge verdict: Accepted)

using System;

class Untitled
{
  static void Main(string[] args)
  {
	  // ???????????´??°a, b, c?????????????????????????????? a < b < c????????¶????????????????????°"Yes"?????????????????????????????°"No"???????????????????????°?????????????????????????????????
    bool parsed = false;
    int a = 0, b = 0, c = 0;
    string s = Console.ReadLine();
    if (!String.IsNullOrEmpty (s)) {
	  string[] strs = s.Split (' ');
	  if (strs.Length == 3) {
		parsed = Int32.TryParse (strs [0], out a);
		if (parsed) {
			parsed = Int32.TryParse (strs [1], out b);
		}
		if (parsed) {
			parsed = Int32.TryParse (strs [2], out c);
		}
	  }
    }
    if (parsed) {
		if (a < b && b < c) {
			System.Console.WriteLine ("Yes");
		} else {
			System.Console.WriteLine ("No");
		}
    }
  }
}