#include<iostream>
#include<string>
using namespace std;
int main() {
	string a, b;
	cin >> a >> b;
	int c = 0;
	for (int i = 0; i < a.length(); i++) {
		for (int j = 0; j < a.length(); j++) {
			if (a[i] == b[j]) {
				c++;
				b[j] = 'A';
				break;
			}
		}
	}
	if (c == a.length()) {
		cout << "YES" << endl;
	}
	else {
		cout << "NO" << endl;
	}
}