func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long int INF = LONG_LONG_MAX;   const long long int NINF = LONG_LONG_MIN;   int32_t main() {     ios::sync_with_stdio(false);     cin.tie(0);     long long int n, l, k;     cin >> n >> l >> k;     string s;     cin >> s;     sort((s).begin(), (s).end());     vector<string> list(n);     long long int p = 0;     long long int start = 0;     for (long long int i = 0; i < l; i++) {       for (long long int j = start; j < k; j++) {         list[j] += s[p++];         if (j != 0) {           if (list[j].back() != list[j - 1].back()) start = j;         }       }     }     for (long long int i = 0; i < n; i++) {       for (long long int j = (long long int)list[i].size(); j < l; j++) {         list[i] += s[p++];       }     }     for (string& ss : list) cout << ss << endl;   }   