func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     int n;     cin >> n;     string s;     cin >> s;     vector<int> vec(n);     vector<int> kactane(30, 0);     vector<int> harfmax(30, 0);     int res = 0;     for (int i = 0; i < n; i++) {       int cnt = 0;       kactane[s[i] -  a ]++;       for (int u = s[i] -  a  + 1; u <=  z  -  a ; u++) {         if (kactane[u]) {           cnt = max(cnt, harfmax[u]);         }       }       harfmax[s[i] -  a ] = max(harfmax[s[i] -  a ], cnt + 1);       vec[i] = cnt;       res = max(res, vec[i]);       if (res > 1) {         cout <<  NO ;         return 0;       }     }     cout <<  YES n ;     for (auto& x : vec) cout << x;     return 0;   }   