#include<bits/stdc++.h>
using namespace std;
#include<string>
// write your code here......
string Reverse(string& s) {
char temp;
for (int i = 0; i < s.length()/2; i++) {
temp = s[i];
s[i] = s[s.length() - 1 - i];
s[s.length() - 1 - i] = temp;
}
return s;
}
int main() {
string s;
getline(cin, s);
// write your code here......
Reverse(s);
cout << s;
return 0;
}

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