#include <bits/stdc++.h>
//#include "atcoder/modint"
using namespace std;
typedef long long ll;
const int INF = 1<<30;
const ll INFLL = 1LL<<60;
const ll MOD = 998244353;
const double INFD = 1.0E10;
const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, -1, 0, 1};
//const int dx[8] = {1, 1, 0, -1, -1, -1, 0, 1};
//const int dy[8] = {0, 1, 1, 1, 0, -1, -1, -1};
using Pair = pair<ll, ll>;
using Graph = vector<set<int>>;
//using mint = atcoder::modint1000000007;d



int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout << fixed << setprecision(15);
    string s; cin >> s;
    int n = s.size();
    for (int i = 0; i < n; i++){
        if (s[i] < '0' || '9' < s[i]) continue;
        reverse(s.begin(), s.begin() + i);
        cout << s << endl;
        return 0;
    }
    return 0;
}