multiple si nemultiple de 3

#include<iostream>
using namespace std;
int main()
{
    int n,x,r,p,r1,p1;
    cin>>n;
    p=1;
    p1=1;
    r=0;
    r1=0;
    while(n!=0)
    {
        x=n%10;
        if(x%3==0&&x!=0)
        {
            r=r+x*p;
            p=p*10;
        }
        else
        {
            r1=r1+x*p1;
            p1=p1*10;
        }
        n=n/10;
    }
    cout<<r<<" "<<r1;
    return 0;
}