#include <bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c,d,x;
	cin>>a;
	b=a%10;
	c=a/10%10;
	d=a/100;
	x=a+b*100+c*10+d;
	cout<<x;
}
/**************************************************************
	Problem: 1020
	User: tonghuawei
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/