#include <bits/stdc++.h>
using namespace std;

int main() {
string a,b;
cin>>a>>b;
bool bb[b.length()]={0};
for (int i = 0; i < a.length(); ++i) {
	for (int j = 0; j < b.length(); ++j) {
		if(a[i]==b[j] &&bb[j]==0){
			bb[j]=1;
			break;
		}
		if(j==b.length()-1){
		cout<<"NO"<<endl;
		return 0;}
	}

}
cout<<"YES"<<endl;
}