#include<bits/stdc++.h>
using namespace std;
 
int main(){
    int x,a,b,c,d;
    cin>>x;
    a=x%10*1000;
    b=x/10%10*100;
    c=x/100%10*10;
    d=x/1000%10*1;
    cout<<a+b+c+d;
     
    return 0;
}
/**************************************************************
	Problem: 1029
	User: chenjiahui
	Language: C
	Result: Compile Error
****************************************************************/