#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
using mint = atcoder::static_modint<998244353>;
// // using mint = atcoder::static_modint<1000000007>;
using ld = long double;
using ll = long long;
#define mp(a,b) make_pair(a,b)
#define rep(i,s,n) for(int i=s; i<(int)n; i++)
const vector<int> dx{1,0,-1,0},dy{0,1,0,-1};

int main(){
    string s;cin >> s;
    string t;
    while(s.back()-'0'>=0 && s.back()-'0'<=9)t.push_back(s.back()),s.pop_back();
    reverse(t.begin(),t.end());
    reverse(s.begin(),s.end());
    cout << s << t;
}