What is the output of this code 

    #include <iostream>
    #include <algorithm>
    using namespace std;
    int main ()
    {
        int myints[] = { 1, 2, 3, 3, 2, 1, 1, 2 };
        int* pbegin = myints;
        int* pend = myints + sizeof(myints) / sizeof(int);
        pend = remove (pbegin, pend, 20);
        for (int* p = pbegin; p != pend; ++p)
            cout << ' ' << *p;
        return 0;
    }