C :

#include<stdio.h>
int main()
{
	int a;
	scanf("%d",&a);
	int b=a/100%10;
	int c=a/10%10;
	int d=a/1%10;
	printf("%d\n",d*100+c*10+b+a);
		
	return 0;
}

C++ :

#include <iostream>
#include <iomanip>
using namespace std;

int main(){
    int n;
    cin>>n;
    cout<<n+n/100+n/10%10*10+n%10*100<<endl;
}

Pascal :

var a,k,g,s,b:longint;
begin
  read(a);
  g:=a mod 10;
  s:=a div 10 mod 10;
  b:=a div 100;
  k:=g*100+s*10+b;
  writeln(k+a);
end.

Java :

import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner scanner=new Scanner(System.in);
		String numberString=scanner.nextLine();
		char[] charArray=numberString.toCharArray();
		String numberString_new="";
		for(int i=charArray.length-1;i>=0;i--){
			numberString_new=numberString_new+String.valueOf(charArray[i]);
		}		System.out.println(Integer.valueOf(numberString.trim())+Integer.valueOf(numberString_new.trim()));
	}
}

Python :

r = int(input())
a = r // 100;
b = r // 10 % 10
c = r % 10;
print(c * 100 + b * 10 + a + r)