#include<bits/stdc++.h>
using namespace std;
int main() {
    int n,a,b,c,d;
    cin>>n;
    a=n%10*10;
    b=n/10%10*1;
    c=n/100%10*1000;
    d=n/1000%10*100;
    cout<<a+b+c+d;
}
/**************************************************************
	Problem: 1619
	User: chenjiahui
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/