func_code_string: #include <bits/stdc++.h>   using namespace std;   string a;   string s;   int main() {     cin >> a >> s;     sort(s.rbegin(), s.rend());     for (int i = 0, j = 0; i < a.size(); i++) {       int ins = s[j] -  0 ;       int ina = a[i] -  0 ;       if (ina < ins && j < s.size()) {         a[i] = s[j++];       }     }     cout << a << endl;     return 0;   }   