import java.util.*;
import java.nio.file.Files;
import java.io.*;


public class Factorial {
    private static void CheckDelete(File s, File d,ArrayList<String> Copy,ArrayList<String> Delete,String ParentPath) throws IOException
    {
        String[] Sl=s.list(), Dl=d.list();
        int len2=Sl.length,len1=Dl.length,i,j;
        String ParentPathForRec;
        //удаление
        for(i=0;i<len1;i++) {
            File f1 = new File(d + "/" + Dl[i]);
            //если f1-файл
            if (f1.isFile() && !Dl[i].equals(".DS_Store")) {
                for (j = 0; j < len2; j++) {
                    File f2 = new File(s + "/" + Sl[j]);
                    if (f2.isFile()) {
                        if (Arrays.equals(Files.readAllBytes(f1.toPath()), Files.readAllBytes(f2.toPath())) && Sl[j].equals(Dl[i])) {
                            break;
                        }
                    }
                    if (j + 1 == len2) {
                        Delete.add(ParentPath + Dl[i]);
                    }
                }
            }
            //если f1-каталог
            else if (!Dl[i].equals(".DS_Store")) {
                for (j = 0; j < len2; j++) {
                    File f2 = new File(s + "/" + Sl[j]);
                    if (Dl[i].equals(Sl[j])) {
                        ParentPathForRec = ParentPath + Sl[j] + "/";
                        CheckDelete(f2, f1, Copy, Delete, ParentPathForRec);
                        break;
                    }
                    if (j + 1 == len2) {
                        Delete.add(ParentPath + Dl[i]);
                    }
                }
            }
        }
    }

    private static void CheckCopy(File s, File d,ArrayList<String> Copy,ArrayList<String> Delete,String ParentPath) throws IOException
    {
        String[] Sl=s.list(), Dl=d.list();
        int len2=Sl.length,len1=Dl.length,i,j;
        String ParentPathForRec;

        //копирование
        for(i=0;i<len2;i++)
        {
            File f3 = new File(s + "/" + Sl[i]);
            //если f3-файл
            if(f3.isFile() && !Sl[i].equals(".DS_Store")) {
                for (j = 0; j < len1; j++) {
                    File f4 = new File(d + "/" + Dl[j]);
                    if (f4.isFile()) {
                        if (Arrays.equals(Files.readAllBytes(f3.toPath()), Files.readAllBytes(f4.toPath())) && Sl[i].equals(Dl[j])) {
                            break;
                        }
                    }
                    if (j + 1 == len1 && f3.isFile()) {
                        Copy.add(ParentPath + Sl[i]);
                    }
                }
            }
            //если f3-каталог
            else if (!Sl[i].equals(".DS_Store")) {
                for (j = 0; j < len1; j++) {
                    File f4 = new File(d + "/" + Dl[j]);
                    if (Dl[j].equals(Sl[i])) {
                        ParentPathForRec = ParentPath + Sl[i] + "/";
                        CheckCopy(f3, f4, Copy, Delete, ParentPathForRec);
                        break;
                    }
                    if(j + 1 == len1 && !f3.isFile())
                    {
                        String[] Directory_404=f3.list();
                        int Len_404=Directory_404.length;
                        for(int k=0;k<Len_404;k++)
                        {
                            if(!Directory_404[k].equals(".DS_Store"))
                                Copy.add(ParentPath + Sl[i] + "/" + Directory_404[k]);
                        }
                    }
                }
            }
        }
    }
    public static void main(String[] args) throws IOException{
        File S=new File(args[0]), D=new File (args[1]);
        ArrayList<String> Copy=new ArrayList<String>(),Delete=new ArrayList<String>();
        String ParentPath="";
        CheckDelete(S, D, Copy, Delete, ParentPath);
        CheckCopy(S, D, Copy, Delete, ParentPath);
        Collections.sort(Delete);
        Collections.sort(Copy);
        int i=0;
        if(Delete.size()==0 && Copy.size()==0)
            System.out.println("IDENTICAL");
        for(i = 0; i < Delete.size(); i++){
            System.out.println("DELETE" + " " + Delete.get(i));
        }
        for(i = 0; i < Copy.size(); i++){
            System.out.println("COPY" + " " + Copy.get(i));
        }
    }
}