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


/**************************************************************
	Problem: 1606
	User: huanghengyi
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/