#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,i=0,v=0,z=0,a=0;
    cin>>n;
        i=n%100;
        v=n%1000/100;
        z=n/1000;
        a=i*100+z*10+v;
        cout<<a;
    }
 
/**************************************************************
	Problem: 1616
	User: linyuhang
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/