#include<iostream>
#include <cstring>
using namespace std;
char a[111];
int c=0;
int x; 
int main(){
    gets(a);
    for(int i=strlen(a)-1;i>=0;i--){
        cout<<a[i];
    }
     //c=c+(a[i]-'0');
    return 0;
}


/**************************************************************
	Problem: 1120
	User: xuanhua
	Language: C++
	Result: Accepted
	Time:30 ms
	Memory:2072 kb
****************************************************************/