import java.util.Scanner;

public class Narabikae {

	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		char[] A = s.nextLine().toCharArray();
		StringBuilder B = new StringBuilder(s.nextLine());
		s.close();
		int n = 0;
		for(char c : A){
			int t = B.indexOf(Character.toString(c));
			if(t >= 0){
				n++;
				B.deleteCharAt(t);
			}
		}
		
		if(n == B.length()){
			System.out.println("YES");
		}else{
			System.out.println("NO");
		}
	}
}