# include<iostream>

using namespace std;

class multime {
public:
    int v[100],n;
multime ();
multime (int);
int apartine(int);
void citire ();
void afisare ();
};




#include <iostream>
using namespace std;
#include "multime.h"
multime ::multime ()
{
    n=0;
}

multime :: multime (int x)
{
    n=1;
    v[1]=n;
}

int apartine (int x)
{
    for(int i=1;i<=n;i++)
        if(v[i] == x)
            return 1;
    return 0;
}

void multime :: citire ()
{
    int x,k,i;
    cin>>n>>x;
    v[1]=x;
    k=n;
    n=1;
    for(i=2;i<=n;i++)
    {
        do{cin>>x;}
        while(this->apartine(x));
        v[++n]=x;
    }
}

void multime :: afisare ()
{
    cout<<"M = {";
    for(int i=1;i<=n;i++)
        cout<<v[i]<<",";
    cout<<"}";
}