import java.io.*;
class code
{
public static void main(String args[])throws IOException
{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
System.out.println("entre the code");
String c=br.readLine();
int l=c.length();
String b="";String e="";
for(int i=l-1;i>=0;i--)
{
b=b+c.charAt(i);
}
String d="";
int a=0;
int dd=0;
while(a<l-1)
{
d=b.substring(a,a+2);
dd=Integer.parseInt(d);
if(dd==32||(dd>=65&&dd<=90)||(dd>=97&&dd<=99))
{
e=e+(char)dd;
a=a+2;
}
else
{
d=b.substring(a,a+3);
dd=Integer.parseInt(d);
if(dd>99&&dd<=122)
{
e=e+(char)dd;
a=a+3;
}
}}System.out.println("decoded messege ="+e);
}}
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