#include<bits/stdc++.h>
using namespace std;
int main(){ 
    int n,h;
    cin>>n;
    {
        h=n%10*10+n/10;
        printf("%d",h);
    }
        return 0;
}
/**************************************************************
	Problem: 1707
	User: xiaojingxuan
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/