#include<bits/stdc++.h>
using namespace std;
int main(){
    int x,s,a,b,c,d;
    cin>>x;
    a=x%10;
    b=x/10%10;
    c=x/100%10;
    d=x/1000;
	s=a*1000+b*100+c*10+d*1;
	cout<<s;
    
    
    
    
	
	
}
/**************************************************************
	Problem: 1029
	User: lvrenxiang
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/