import java.io.*; class rev { public static void main(String args[]) { try {
int ki;

    String k=new String();
    BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
    String a=br.readLine();
    ki=a.length();
    for(int i=ki;i>0;i--)
        {


        k=k.concat(a.substring(i-1,i));


        }

    System.out.println(k);


    }
    catch(Exception e){}
    }
}

class revstring { public static void main(String args[]) { try { int c=0; String sen=new String(); String word[]=new String[10]; System.out.println("enter a sentence"); BufferedReader br=newBufferedReader(newInputStreamReader(System.in)); sen=br.readLine(); word=sen.split(" ");

    int i;
    for(i=0;i<sen.length();i++)
        {
        if((sen.substring(i,i+1)).equals(" "))
            {
            c++;
            }
        }


    for(int j=c;j>=0;j--)
    System.out.print(word[j]+" ");
    }
    catch(Exception e){}
    }
}