#include< iostream>

#include< string>

using namespace std;

int main(void) {

string a;
int b = 0;
cin>>a;
for(int i = 0;i<a.size();i++)
{
    if((a[i]-'0')%2==0)b*=10;
    else b*=10,b++;
}
cout<<b;
return 0;

}