#include<iostream>
using namespace std;
int main(){
	int a,b,c,n;
	cin>>n;
	a=n/10;
	b=n%10;
	c=b*10+a;
	cout<<c;
}
/**************************************************************
	Problem: 1707
	User: panyuchen
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/