//#pragma GCC optimize("Ofast")
//#pragma GCC optimize "O3,omit-frame-pointer,inline"
#include <iostream> // cout, endl, cin
#include <string> // string, to_string, stoi
#include <vector> // vector
#include <algorithm> // min, max, swap, sort, reverse, lower_bound, upper_bound
#include <utility> // pair, make_pair
#include <tuple> // tuple, make_tuple
#include <cstdint> // int64_t, int*_t
#include <cstdio> // printf
#include <map> // map
#include <queue> // queue, priority_queue
#include <set> // set
#include <stack> // stack
#include <deque> // deque
#include <unordered_map> // unordered_map
#include <unordered_set> // unordered_set
#include <bitset> // bitset
#include <cctype> // isupper, islower, isdigit, toupper, tolower
#include <iomanip>//fixed,setprecision
#include <limits.h>//INT_MAX
#include <math.h>//M_PI
#include <random>
#include <regex> // 正規表現
#include <time.h>
#include <fstream>
#include <array>
#include <bit>
#include <chrono>
#include <span>
#include <cmath>
#include <complex>//複素数
//#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
//using mint = modint998244353;
using ll = long long;
using ull = unsigned long long;
 
#define rep(i, n) for (ll i = 0; i < (ll)(n); i++)
const int dx[4] = {0, 1, 0, -1};
const int dy[4] = {1, 0, -1, 0};
random_device rnd;
mt19937 mt_gen(rnd());
int RandInt(int a, int b) {
    return a + mt_gen() % (b - a + 1);
}
const int MAX = 100000000;


string s;
int main(){
    cin>>s;
    string t,u;
    int n=s.size();
    rep(i,n)if(s[i]-'0'>=0&&s[i]-'0'<=9)u+=s[i];
    else t+=s[i];
    reverse(t.begin(),t.end());
    cout<<t<<u<<endl;
    return 0;
}