#include <iostream>
#include<string.h>
#include<stdio.h>
#include<cstdio>
#include<stdlib.h>
#include<map>
#include<ctype.h>
#include <set>
using namespace std;
int main ()
{
set<int> s;
int a;
int t;
cin>>t;
while(t--)
{
cin>>a;
s.insert(a);
}
int h=s.size();
cout << "Set now contains:";
while (!s.empty()) {
cout << ' ' << *s.begin();
s.erase(s.begin());
}
cout<<endl<<h;
return 0;
}
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