#include <iostream>
using namespace std;

int main() {
    int num, tens, ones;
    cin >> num;
    tens = num / 10;
    ones = num % 10;
    cout << ones * 10 + tens << endl;
    return 0;
}
/**************************************************************
	Problem: 1707
	User: fuhoubin
	Language: C++
	Result: Accepted
	Time:16 ms
	Memory:2072 kb
****************************************************************/