Поиск в контейнере с указателями

class myclass {
public:
myclass(int,int);
////////
};
multiset<myclass*> ms;

ms.insert( new myclass(a,b) );

#include <iostream>
#include <set>
#include <algorithm>
 
class myclass {
public:
    myclass(int f=0,int s=0):
      first(f), second(s)
      {
      }
      int getFirst() const {return first;}
      int getSecond() const {return second;}
private:
    int first, second;
////////
};
 
bool operator ==(const myclass& first, const myclass& second)
{
    return first.getFirst() == second.getFirst() &&
        first.getSecond() == second.getSecond();
}
 
std::ostream& operator <<(std::ostream& os, const myclass& one)
{
    os<< one.getFirst() <<' '<<one.getSecond()<<'\n';
    return os;
}
 
struct compare:public std::unary_function<myclass, bool>
{
    argument_type finded;
    result_type operator() (argument_type* one)
    {
        return *one == finded;
    }
};
 
typedef std::multiset<myclass*> MS;
int main()
{
    MS ms;
    ms.insert(new myclass(2,3));
    ms.insert(new myclass(5,6));
    ms.insert(new myclass(3,4));
    compare comp;
    comp.finded=myclass(5,6);
    MS::iterator iter=std::find_if(ms.begin(), ms.end(), comp);
    if(iter != ms.end())
        std::cout<<**iter<<'\n';
    else
        std::cout<<"Not\n";
}