#include<iostream>
#include<vector>
#include<utility>
#include<algorithm>
using namespace std;

int main(){
	string s;
	cin >> s;
	string a = "";
	string b = "";
	for(char c : s)
	{
		if(isdigit(c))
		{
			a.push_back(c);
		} else 
		{
			b.push_back(c);
		}
	}

	reverse(begin(b),end(b));
	cout << b + a << endl;
}