import java.util.Scanner;

class No_64{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int cnt = 0;
		int judge1 = 1;
		int judge2 = 1;
		
		for(int i = 0;i < a.length();i++){
			char x = a.charAt(i);
			for(int t = 0;t < a.length();t++){
				char y = b.charAt(t);
				if(x == y){
					break;
				}
				cnt++;
			}
			if(cnt == a.length()){
				judge1 = 0;
				break;
			}
			cnt = 0;
		}
		
		for(int i = 0;i < a.length();i++){
			char x = b.charAt(i);
			for(int t = 0;t < a.length();t++){
				char y = a.charAt(t);
				if(x == y){
					break;
				}
				cnt++;
			}
			if(cnt == a.length()){
				judge2 = 0;
				break;
			}
			cnt = 0;
		}
		
		if(judge1 == 1 && judge2 == 1){
			System.out.println("YES");
		}else{
			System.out.println("NO");
		}
		
		}
	}