#include<iostream>
#include<cstdio>
#include<string>
using namespace std;

int main() {
	string a, b;
	cin >> a >> b;

	for (auto i = a.begin() ; i != a.end() ; i++)
	{
		for (auto k = b.begin(); k != b.end(); k++)
		{
			if (*i == *k)
			{
				b.erase(k);
				break;
			}
		}
	}
	if (b.length() == 0)
	{
		cout << "YES" << endl;
	}
	else {
		cout << "NO" << endl;
	}

	return 0;
}