#include<bits/stdc++.h>
using namespace std;
int main()
{
	int x;
	cin>>x;
int g=x%10;
int	s=x/10%10;
int	b=x/100%10;
int	q=x/1000;
	int c=g*1000+s*100+b*10+q;
	cout<<c;
	
	
return 0;
}

/**************************************************************
	Problem: 1029
	User: 21A
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/