import java.text.*;
import java.util.*;

interface F {
    void srt(int n);
    void srt_d(String d);
}

class InvEx extends Exception {
    public InvEx(String m) {
        super(m);
    }
}

class S implements Comparable<S> {
    String n;
    int r;
    String reg;
    String br;

    public S(String n, int r, String br) {
        this.n = n;
        this.r = r;
        this.br = br;
    }

    @Override
    public int compareTo(S o) {
        return Integer.compare(this.r, o.r);
    }

    @Override
    public String toString() {
        return "S{n='" + n + "', r=" + r + ", reg='" + reg + "', br='" + br + "'}";
    }
}

class Fcl implements Comparable<Fcl> {
    String n;
    String d;
    String dept;
    String emp;

    public Fcl(String n, String d, String dept) throws InvEx {
        if (!d.matches("\\d{2}-[a-zA-Z]{3}-\\d{4}") && !d.matches("\\d{2}-\\d{2}-\\d{4}")) {
            throw new InvEx("Invalid date format");
        }
        this.n = n;
        this.d = d;
        this.dept = dept;
    }

    @Override
    public int compareTo(Fcl o) {
        try {
            SimpleDateFormat f = new SimpleDateFormat("dd-MM-yyyy");
            return f.parse(this.d).compareTo(f.parse(o.d));
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public String toString() {
        return "Fcl{n='" + n + "', d='" + d + "', dept='" + dept + "', emp='" + emp + "'}";
    }
}

public class M implements F {
    List<S> sts = new ArrayList<>();
    List<Fcl> fcls = new ArrayList<>();

    public static void main(String[] a) {
        M m = new M();

        m.sts.add(new S("A", 2, "CCE"));
        m.sts.add(new S("B", 1, "IT"));
        m.sts.add(new S("C", 3, "CCE"));

        try {
            m.fcls.add(new Fcl("S", "15-Mar-2002", "ICT"));
            m.fcls.add(new Fcl("J", "20-03-2002", "ECE"));
            m.fcls.add(new Fcl("J2", "10-Feb-2002", "ICT"));
        } catch (InvEx e) {
            System.out.println(e.getMessage());
        }

        m.srt(0);
        m.srt_d("");

        for (S s : m.sts) {
            System.out.println(s);
        }

        for (Fcl f : m.fcls) {
            System.out.println(f);
        }
    }

    @Override
    public void srt(int n) {
        Collections.sort(sts);
        Map<String, Integer> brCnt = new HashMap<>();

        for (S s : sts) {
            brCnt.putIfAbsent(s.br, 1);
            s.reg = "2022" + s.br + String.format("%03d", brCnt.get(s.br));
            brCnt.put(s.br, brCnt.get(s.br) + 1);
        }
    }

    @Override
    public void srt_d(String d) {
        Collections.sort(fcls);
        Map<String, Integer> deptCnt = new HashMap<>();

        for (Fcl f : fcls) {
            deptCnt.putIfAbsent(f.dept, 1);
            f.emp = "MAHE" + f.dept + String.format("%03d", deptCnt.get(f.dept));
            deptCnt.put(f.dept, deptCnt.get(f.dept) + 1);
        }
    }
}
