\begin{array}{c} \color{#db1616}{\texttt{#Khoadang09}} \end{array}

*C++:

#include <bits/stdc++.h>
using namespace std;
int main(){
    freopen("CAU60.INP","r",stdin);
    freopen("CAU60.OUT","w",stdout);
    string s; cin >> s;
    string res = "";
    for (char i:s) if ((i-'0')%2==0) res += i;
    reverse(res.begin(), res.end());
    cout << res;
    
    return 0;
}

import sys
sys.stdin = open('CAU60.INP','r')
sys.stdout = open('CAU60.OUT','w')

s = input()

for i in reversed(s):
    if i not in ['1','3','5','7','9']:
        print(i,end='')