#include <iostream>
#include <string>

using namespace std;

int main(void){
    string a,b;
    cin>>a>>b;
    for(int i=0;i<a.size();i++){
        for(int j=0;j<b.size();j++){
            if(a[i]==b[j]) {
                b.erase(b.begin()+j);
                break;
            }
        }
    }
    if(b.size()) cout<<"NO"<<endl;
    else cout<<"YES"<<endl;
}