#include <stdio.h>
#include <stdlib.h>


int main()
{
    int n,m=0,i;
    printf("Introduceti numarul: ");
    scanf("%d",&n);
    while(n){
        if((n%10)%2==1) m=m*10+n%10;
        n=n/10;
    }
    while(m){
        n=n*10+m%10;
        m=m/10;
    }
    printf("%d",n);
    return 0;
}