#include <iostream>
using namespace std;
int main()
{
	int x,ge,shi,bai,qian;
	cin >> x;
	ge = x%10;
	shi = (x/10)%10;
	bai = (x/100)%10;
	qian = x/1000;
	cout << ge*1000+shi*100+bai*10+qian;
}
/**************************************************************
	Problem: 1029
	User: xiaomingze
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/