#include <iostream>
using namespace std;

int main(){
  string a,b;
  cin >> a >> b;
  for(int i=0;i<a.size();i++){
    for(int j=0;j<b.size();j++){
      if(b[j]==a[i]){b.erase(j,1);break;}
    }
  }
  if(b.size()!=0)cout << "NO" << endl;
  else cout << "YES" << endl;
  return 0;
}