func_code_string: #include <bits/stdc++.h>   using namespace std;   string LexicographicallyMaximumSubsequence(string text) {     string localMax =   ;     char current = text.at(text.length() - 1);     localMax += current;     unsigned int size = text.length() - 2;     for (int i = size; i >= 0; i--) {       if (text.at(i) >= current) {         localMax = text.at(i) + localMax;         current = text.at(i);       }     }     return localMax;   }   int main() {     string text;     cin >> text;     cout << LexicographicallyMaximumSubsequence(text) << endl;     return 0;   }   