func_code_string: #include <bits/stdc++.h>   using namespace std;   void optimise() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);   }   void solve() {     string s;     cin >> s;     string s2;     cin >> s2;     sort(s.begin(), s.end());     for (long long int i = 0; i < s.size(); i++) {       for (long long int j = i + 1; j < s.size(); j++) {         string k = s;         swap(k[i], k[j]);         if (stoll(k) >= stoll(s) && stoll(k) <= stoll(s2)) s = k;       }     }     cout << s;   }   signed main() {     optimise();     long long int t = 1;     while (t--) {       solve();     }   }   