#include<bits/stdc++.h>
using namespace std;
int main(){
	int x,y,z,a;
	cin>>a;
	x=a/100;
	y=a/10%10;
	z=a%10;
	a=x*100000+y*10000+z*1000+z*100+y*10+x;
	cout<<a; 
}
/**************************************************************
	Problem: 1620
	User: panyuchen
	Language: C++
	Result: Wrong Answer
****************************************************************/