#include <bits/stdc++.h>
#define pb push_back
using namespace std;
int main()
{
int n;
cin>>n;
vector<int> u,v;
for(int i=0;i<2*n;i++)
{
int x;
cin>>x;
v.pb(x);
}
sort(v.begin(),v.end());
int ans=1e9;
int f=0;
for(int i=0;i<v.size();i++)
{
for(int j=i+1;j<v.size();j++)
{
int diff=0;
for(int k=0;k<v.size();k++)
{
if(k==i||k==j)
continue;
u.pb(v[k]);
}
for(int k=0;k<u.size();k++)
cout<<u[k]<<" ";
cout<<endl;
for(int k=0;k<u.size();k+=2)
diff+=abs(u[k]-u[k+1]);
cout<<f++<<endl;
ans=min(ans,diff);
u.clear();
}
}
//cout<<ans<<"\n";
return 0;
}
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