#include <bits/stdc++.h>
using namespace std;
int main(){
	int n,g,s,d;
	cin>>n;
	g=n%10;
	s=n/10%10;  
	cout<<g*10+s; 
}
/**************************************************************
	Problem: 1734
	User: wngjinming
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/