#include<iostream>
#include<string>
#include<math.h>
#include<stdlib.h>
#include<string>
using namespace std;


int main() {
	string a;
	string b;
	int n;
	int k;
	int f = 0;
	cin >> a >> b;
	n = a.size();
	for (int i = 0; i <= n - 1; i++) {
		k = b.size();
		for (int j = 0; j <= k - 1; j++) {
			if (a[i] == b[j]) {
				if (i == n - 1) {
					cout << "YES";
				}
				b.erase(j);
				break;
			}
			else if (j == k -1) {
				cout << "NO";
				f = 1;
			}
		}
		if (f == 1) {
			break;
		}
	}
	
}