import java.util.*;

public class Main {
    public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		int m = scan.nextInt();
		int x = scan.nextInt();
		if(m+x >= n+3){
			System.out.println("YES");
		}else{
			System.out.println("NO");
		}
    }
}