#include<bits/stdc++.h>
using namespace std;
int main() {
	int n,g,s,h;
	cin>>n;
	g=n%10;
	s=n/10;
	h=g*10+s;
	cout<<h;
}

/**************************************************************
	Problem: 1606
	User: chenjunlin
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/