C++ List iteration issue

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C++

Hi i have previous experience in C#, and i am new to C++, I have a simple question. In this code when i print value of a and n they should be equal (in my opinion) but it is not the case. I wonder why it is so, variable s and *p should be pointing to same thing. If i change the order of line 5 and 6 then things got correct. My question is that why s and *p not pointing to same variable. I think i am missing some basic concept here. Please can any one explain this

void EnterMentorsDataTest()
{
    Supervisor s;
    s.GetEntity();//populate s

    Project prj;
    prj.GetEntity();//populate prj


    slst.push_back(s);
    s.lstProjects.push_back(prj);


    list<Supervisor>::iterator p = slst.begin();
    while(p != slst.end())
    {
        cout<<"----------"<<endl;
        int a = s.lstProjects.size();//a will be 1
        int n = (*p).lstProjects.size();// n will be 0
        p++;
    }
}