import java.io.*;
import java.util.*;

class Main{
	public static void main(String[] args){
		try{
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			String line = br.readLine();
			StringTokenizer st = new StringTokenizer(line," ");
			int a = Integer.parseInt(st.nextToken());
			int b = Integer.parseInt(st.nextToken());
			int c = Integer.parseInt(st.nextToken());
			if(a < b){
				if(b < c){
					System.out.println("Yes");
				}
				else{
					System.out.println("No");
				}
			}
			else{
				System.out.println("No");
			}
		}
		catch(IOException e){
			System.out.println(e);
		}
	}
} import java.io.*; io.* java import java.util.*; util.* java class Main{
	public static void main(String[] args){
		try{
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			String line = br.readLine();
			StringTokenizer st = new StringTokenizer(line," ");
			int a = Integer.parseInt(st.nextToken());
			int b = Integer.parseInt(st.nextToken());
			int c = Integer.parseInt(st.nextToken());
			if(a < b){
				if(b < c){
					System.out.println("Yes");
				}
				else{
					System.out.println("No");
				}
			}
			else{
				System.out.println("No");
			}
		}
		catch(IOException e){
			System.out.println(e);
		}
	}
} Main public static void main(String[] args){
		try{
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			String line = br.readLine();
			StringTokenizer st = new StringTokenizer(line," ");
			int a = Integer.parseInt(st.nextToken());
			int b = Integer.parseInt(st.nextToken());
			int c = Integer.parseInt(st.nextToken());
			if(a < b){
				if(b < c){
					System.out.println("Yes");
				}
				else{
					System.out.println("No");
				}
			}
			else{
				System.out.println("No");
			}
		}
		catch(IOException e){
			System.out.println(e);
		}
	} main {
		try{
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			String line = br.readLine();
			StringTokenizer st = new StringTokenizer(line," ");
			int a = Integer.parseInt(st.nextToken());
			int b = Integer.parseInt(st.nextToken());
			int c = Integer.parseInt(st.nextToken());
			if(a < b){
				if(b < c){
					System.out.println("Yes");
				}
				else{
					System.out.println("No");
				}
			}
			else{
				System.out.println("No");
			}
		}
		catch(IOException e){
			System.out.println(e);
		}
	} try{
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			String line = br.readLine();
			StringTokenizer st = new StringTokenizer(line," ");
			int a = Integer.parseInt(st.nextToken());
			int b = Integer.parseInt(st.nextToken());
			int c = Integer.parseInt(st.nextToken());
			if(a < b){
				if(b < c){
					System.out.println("Yes");
				}
				else{
					System.out.println("No");
				}
			}
			else{
				System.out.println("No");
			}
		}
		catch(IOException e){
			System.out.println(e);
		} catch(IOException e){
			System.out.println(e);
		} IOException e {
			System.out.println(e);
		} System.out.println(e) System.out.println System.out System System.out e {
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			String line = br.readLine();
			StringTokenizer st = new StringTokenizer(line," ");
			int a = Integer.parseInt(st.nextToken());
			int b = Integer.parseInt(st.nextToken());
			int c = Integer.parseInt(st.nextToken());
			if(a < b){
				if(b < c){
					System.out.println("Yes");
				}
				else{
					System.out.println("No");
				}
			}
			else{
				System.out.println("No");
			}
		} BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) String line = br.readLine(); line br.readLine() br.readLine br StringTokenizer st = new StringTokenizer(line," "); st new StringTokenizer(line," ") int a = Integer.parseInt(st.nextToken()); a Integer.parseInt(st.nextToken()) Integer.parseInt Integer st.nextToken() st.nextToken st int b = Integer.parseInt(st.nextToken()); b Integer.parseInt(st.nextToken()) Integer.parseInt Integer st.nextToken() st.nextToken st int c = Integer.parseInt(st.nextToken()); c Integer.parseInt(st.nextToken()) Integer.parseInt Integer st.nextToken() st.nextToken st if(a < b){
				if(b < c){
					System.out.println("Yes");
				}
				else{
					System.out.println("No");
				}
			}
			else{
				System.out.println("No");
			} a < b a b {
				if(b < c){
					System.out.println("Yes");
				}
				else{
					System.out.println("No");
				}
			} if(b < c){
					System.out.println("Yes");
				}
				else{
					System.out.println("No");
				} b < c b c {
					System.out.println("Yes");
				} System.out.println("Yes") System.out.println System.out System System.out "Yes" {
					System.out.println("No");
				} System.out.println("No") System.out.println System.out System System.out "No" {
				System.out.println("No");
			} System.out.println("No") System.out.println System.out System System.out "No" String[] args args
import java.io.*;
import java.util.*;

class Main{
	public static void main(String[] args){
		try{
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			String line = br.readLine();
			StringTokenizer st = new StringTokenizer(line," ");
			int a = Integer.parseInt(st.nextToken());
			int b = Integer.parseInt(st.nextToken());
			int c = Integer.parseInt(st.nextToken());
			if(a < b){
				if(b < c){
					System.out.println("Yes");
				}
				else{
					System.out.println("No");
				}
			}
			else{
				System.out.println("No");
			}
		}
		catch(IOException e){
			System.out.println(e);
		}
	}
}