#include <iostream>
#include <cstdio>
#include <algorithm>
#include <string>
#include <cstring>
#include <cctype>
#include <cmath>
#include <stack>
#include <queue>
#include <vector>
#include <set>
#include <map>
#include <list>
#include <stdio.h>
#include <string.h>
#include <cstdlib>
#include <math.h>
#include <bitset>
#include <iterator>
#include <iomanip>
#include <sstream>
#define INF 2000000000
using namespace std;
int dx[4]={1,0,-1,0},dy[4]={0,1,0,-1};
#define sym cout<<"---------"<<endl;
#define ll long long
#define PL pair<long long, long long>
#define P pair<int,int>
#define mk make_pair
#define en endl
#define WHITE 0
#define BLACK 2
#define GRAY 1
#define RE return 0
#define int ll

int done[11];

signed main(){
  string a,b;
  cin>>a>>b;
  bool there=true;
  for(int i=0; i<a.size(); i++){
    for(int j=0; j<b.size(); j++){
      if(a[i]==b[j]&&!done[j]) {
        done[j]=true;
        break;
      }
      if(j==b.size()-1) there=false;
    }
  }
  if(there) cout<<"YES"<<en;
  else cout<<"NO"<<en;
}