import java.util.Scanner;
class Main {
	public void range() {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if(a < b ) {
			if(a < c) {
				if(b < c) {
					System.out.println("Yes");
				}else { 
					System.out.println("No");
				}
			} else { 
				System.out.println("No");
			}
		} else { 
			System.out.println("No");
		}
	}
	public static void main(String[] args) {
		new Main().range();
	}
} import java.util.Scanner; Scanner java.util class Main {
	public void range() {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if(a < b ) {
			if(a < c) {
				if(b < c) {
					System.out.println("Yes");
				}else { 
					System.out.println("No");
				}
			} else { 
				System.out.println("No");
			}
		} else { 
			System.out.println("No");
		}
	}
	public static void main(String[] args) {
		new Main().range();
	}
} Main public void range() {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if(a < b ) {
			if(a < c) {
				if(b < c) {
					System.out.println("Yes");
				}else { 
					System.out.println("No");
				}
			} else { 
				System.out.println("No");
			}
		} else { 
			System.out.println("No");
		}
	} range {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if(a < b ) {
			if(a < c) {
				if(b < c) {
					System.out.println("Yes");
				}else { 
					System.out.println("No");
				}
			} else { 
				System.out.println("No");
			}
		} else { 
			System.out.println("No");
		}
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int c = sc.nextInt(); c sc.nextInt() sc.nextInt sc if(a < b ) {
			if(a < c) {
				if(b < c) {
					System.out.println("Yes");
				}else { 
					System.out.println("No");
				}
			} else { 
				System.out.println("No");
			}
		} else { 
			System.out.println("No");
		} a < b a b {
			if(a < c) {
				if(b < c) {
					System.out.println("Yes");
				}else { 
					System.out.println("No");
				}
			} else { 
				System.out.println("No");
			}
		} if(a < c) {
				if(b < c) {
					System.out.println("Yes");
				}else { 
					System.out.println("No");
				}
			} else { 
				System.out.println("No");
			} a < c a c {
				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" { 
			System.out.println("No");
		} System.out.println("No") System.out.println System.out System System.out "No" public static void main(String[] args) {
		new Main().range();
	} main {
		new Main().range();
	} new Main().range() new Main().range new Main() String[] args args
import java.util.Scanner;
class Main {
	public void range() {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if(a < b ) {
			if(a < c) {
				if(b < c) {
					System.out.println("Yes");
				}else { 
					System.out.println("No");
				}
			} else { 
				System.out.println("No");
			}
		} else { 
			System.out.println("No");
		}
	}
	public static void main(String[] args) {
		new Main().range();
	}
}