Std::set( vector ) и расход памяти

    
set<string> res;
    for(uint x = 0; x<100000;++x) res.insert( vtos(x,0) );
    uint result = 0;
    cout << "Res.size() == " << res.size() << endl;
    uint size1=0;uint size2=0;uint size3=0;
    set<string>::const_iterator it=res.begin();
    for(;it!=res.end();++it){
        string str = *it;
        size1+=str.size();
        size2+=str.capacity();
        size3+=str.capacity() + sizeof(string);
}
    cout << "size1 == " << ((float)size1)/1024/1024 << endl;
    cout << "size2 == " << ((float)size2)/1024/1024 << endl;
    cout << "size3 == " << ((float)size3)/1024/1024 << endl;
while(true){}

size3+=str.capacity() + sizeof(set<string>);

for(;it!=res.end();++it){
        string str = *it;
        size1+=str.size();
        size2+=str.capacity();
        //size3+=str.capacity() + sizeof(string);
}
size3 = size2+res.capacity()*sizeof(vector<string>);//вектор
//size3 = size2+res.size()*sizeof(set<string>); для set

size3 = size2+sizeof(res);+res.capacity()*sizeof(string)//в случае сета res.size();

size3 = size2+sizeof(res) +res.capacity()*sizeof(string)

size3=size2 + sizeof(string)*res.capacity() + sizeof(vector<string>())