#include <bits/stdc++.h>
using namespace std;

int main(){
    int a,b,c,d;
    cin>>a;
    b = a / 10 % 10;
	c = a % 10;
	d = c * 10 + b;
	cout<<d<<endl; 
}
/**************************************************************
	Problem: 1707
	User: admin
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2072 kb
****************************************************************/