#include <bits/stdc++.h>   using namespace std;   void run_case() {     string A, B, C, D;     cin >> A;     cin >> B;     C = (A + B);     sort(C.begin(), C.end());     cin >> D;     sort(D.begin(), D.end());     if (C == D)       cout <<  YES n ;     else       cout <<  NO n ;   }   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     long long T = 1;     while (T--) run_case();     return 0;   }   