#include <iostream>

using namespace std;

int main()
{
   int n, nrp=0, nri=0, Pp=1, Pi=1, c;
   cin>>n;
   while(n)
   {
       c=n%10;
       if(c%2==0)
       {
           nrp=nrp+c*Pp;
           Pp=Pp*10;
       }
       else
       {
           nri=nri+c*Pi;
           Pi=Pi*10;
       }
       n=n/10;
   }
   cout<<nri<<nrp;
    return 0;
}