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

int main() {
  string s_1, s_2;

  cin >> s_1 >> s_2;
  for (int i = 0; i < (int)s_1.size(); i++) {
    for (int j = 0; j < (int)s_2.size(); j++) {
      if (s_1[i] == s_2[j]) {
        s_2.erase(j, 1);
        break;
      }
    }
  }
  if (s_2.empty()) {
    cout << "YES" << endl;
  } else {
    cout << "NO" << endl;
  }
}