#include <algorithm>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <string>
#include <vector>
using namespace std;
typedef pair<int, int> pii;
#define rep(i,x) for(int i=0;i<(int)(x);i++)

int main(){
	vector<char> item;
	string a, b;
	cin >> a >> b;
	rep(i, a.size()) item.push_back(a[i]);
	rep(i, b.size()) item.erase(remove(item.begin(), item.end(), b[i]), item.end());
	if (item.empty()) cout << "YES" << endl;
	else cout << "NO" << endl;
	return 0;
}