func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);     int n;     cin >> n;     string s;     cin >> s;     set<int> col[26];     vector<int> ans;     int cnt = 0;     for (int i = 0; i < n; i++) {       set<int> used;       for (int j = s[i] -  a  + 1; j < 26; j++)         for (int num : col[j]) used.insert(num);       int newCol = 1;       while (used.count(newCol)) newCol++;       col[s[i] -  a ].insert(newCol);       ans.push_back(newCol);       cnt = max(cnt, newCol);     }     cout << cnt <<   n ;     for (int i : ans) cout << i <<    ;     return 0;   }   