#include<iostream>
#include<string>
using namespace std;
void printReverse(string str){
int len=str.length();
for(int i=0;i<len;i++){
cout<<str[len-(i+1)];
}
cout<<endl;
}
int main(){
string str;
std::getline(std::cin,str);
printReverse(str);
return 0;
}
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