import java.util.*;

public class Yukicoder_69{
	public static void main(String[] args){
		Scanner stdIn = new Scanner(System.in);
		String A = stdIn.next();
		String B = stdIn.next();
		boolean[] judg = new boolean[A.length()];
		Arrays.fill(judg,true);
		for(int i=0;i<B.length();i++){
			char ch = B.charAt(i);
			for(int j=0;j<A.length();j++){
				if(judg[j] && ch == A.charAt(j)){
					judg[j] = false;
				}
			}
		}	

		for(int i=0;i<judg.length;i++){
			if(judg[i]){
				System.out.println("NO");
				break;
			}
			if(i==judg.length-1){
				System.out.println("YES");
			}
		}
	}
}