import java.io.*;

class Main {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));// ??\????????????????????????
            String line = br.readLine(); // ??\???????????????????????\???
            int i = line.length();
            StringBuilder sb = new StringBuilder();
            	while(i > 0){
            		sb.append(line.substring(i-1, i));
            		i--;
            	}
            	System.out.println(sb);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
} import java.io.*; io.* java class Main {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));// ??\????????????????????????
            String line = br.readLine(); // ??\???????????????????????\???
            int i = line.length();
            StringBuilder sb = new StringBuilder();
            	while(i > 0){
            		sb.append(line.substring(i-1, i));
            		i--;
            	}
            	System.out.println(sb);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
} Main public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));// ??\????????????????????????
            String line = br.readLine(); // ??\???????????????????????\???
            int i = line.length();
            StringBuilder sb = new StringBuilder();
            	while(i > 0){
            		sb.append(line.substring(i-1, i));
            		i--;
            	}
            	System.out.println(sb);
        } catch (Exception e) {
            e.printStackTrace();
        }
    } main {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));// ??\????????????????????????
            String line = br.readLine(); // ??\???????????????????????\???
            int i = line.length();
            StringBuilder sb = new StringBuilder();
            	while(i > 0){
            		sb.append(line.substring(i-1, i));
            		i--;
            	}
            	System.out.println(sb);
        } catch (Exception e) {
            e.printStackTrace();
        }
    } try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));// ??\????????????????????????
            String line = br.readLine(); // ??\???????????????????????\???
            int i = line.length();
            StringBuilder sb = new StringBuilder();
            	while(i > 0){
            		sb.append(line.substring(i-1, i));
            		i--;
            	}
            	System.out.println(sb);
        } catch (Exception e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        } Exception e {
            e.printStackTrace();
        } e.printStackTrace() e.printStackTrace e {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));// ??\????????????????????????
            String line = br.readLine(); // ??\???????????????????????\???
            int i = line.length();
            StringBuilder sb = new StringBuilder();
            	while(i > 0){
            		sb.append(line.substring(i-1, i));
            		i--;
            	}
            	System.out.println(sb);
        } BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) String line = br.readLine(); line br.readLine() br.readLine br int i = line.length(); i line.length() line.length line StringBuilder sb = new StringBuilder(); sb new StringBuilder() while(i > 0){
            		sb.append(line.substring(i-1, i));
            		i--;
            	} i > 0 i 0 {
            		sb.append(line.substring(i-1, i));
            		i--;
            	} sb.append(line.substring(i-1, i)) sb.append sb line.substring(i-1, i) line.substring line i-1 i 1 i i-- i System.out.println(sb) System.out.println System.out System System.out sb String[] args args
import java.io.*;

class Main {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));// ??\????????????????????????
            String line = br.readLine(); // ??\???????????????????????\???
            int i = line.length();
            StringBuilder sb = new StringBuilder();
            	while(i > 0){
            		sb.append(line.substring(i-1, i));
            		i--;
            	}
            	System.out.println(sb);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}