#include "bits/stdc++.h"
using namespace std;
#define int long long
signed main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int n, k;
cin >> n >> k;
int m = n + k;
vector < int > a(m + 1);
for(int i = 1; i <= m; i++)
cin >> a[i];
set < int > st;
map < int, vector < pair < int , int > > > mp;
for(int i = 1; i <= m; i++){
for(int j = i + 1; j <= m; j++){
st.insert(a[i] + a[j]);
mp[a[i] + a[j]].push_back({i, j});
}
}
vector < int > rs, id;
for(auto x : st){
if(mp[x].size() < n / 2)continue;
for(int i = 0; i < n / 2; i++){
id.push_back(mp[x][i].first);
id.push_back(mp[x][i].second);
rs.push_back(a[mp[x][i].first]);
rs.push_back(a[mp[x][i].second]);
}
break;
}
sort(id.begin(), id.end());
sort(rs.begin(), rs.end());
if(id[0] != 1){
return 0;
}
for(auto i : rs)
cout << i << ' ';
cout << endl;
}
