#include <bits/stdc++.h>
using namespace std;
int main () {
	string s;
	cin >> s;
	int fl = 0;
	while (s[fl] < '0' || '9' < s[fl]) fl ++;
	string p = s.substr(0, fl), q = s.substr(fl, s.size() - fl);
	reverse(p.begin(), p.end());
	cout << p << q << endl;
}