//#pragma GCC optimize("Ofast,unroll-loops")
//#pragma GCC target("avx2,fma,bmi,bmi2,sse4.2,popcnt,lzcnt")
#include <bits/stdc++.h>
#define int long long
#define ll long long
#define vll vector<ll>
#define vllp vector<pair<ll, ll> >
#define vi vector <int>
#define vip vector <pair <int, int> >
#define db double
#define ldb long double
#define pdb pair <double, double>
#define YES cout<<"Yes"
#define NO cout<<"No"
#define nl cout<<"\n"
#define vv vector <vector <ll> >
#define pll pair <ll, ll>
#define pi pair <int, int>
#define pb push_back
#define f first
#define s second
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const ll mod=1e9+7;
const ll modx=998244353;
const double eps=1e-9;
const ll INF=2e9;
const ll INFINF=9e18;
const int N=150000, K=400;
int n, k, a[N+K+5];
vi v, ans;
set <int> myset;
void input()
{
cin >> n >> k;
for(int i = 1; i <= n+k; i++)
{
cin >> a[i];
}
}
bool ktra(int sum)
{
int l=1, r=n+k;
int cnt=0;
while(l<r)
{
if(a[l]+a[r]==sum)
{
cnt+=2;
l++;
r--;
}
else if(a[l]+a[r]>sum) r--;
else l++;
}
if(cnt>=n) return true;
return false;
}
void print(int sum)
{
int l=1, r=n+k;
while(l<r)
{
if(a[l]+a[r]==sum)
{
if((int) ans.size()<n) ans.pb(a[l]), ans.pb(a[r]);
l++;
r--;
}
else if(a[l]+a[r]>sum) r--;
else l++;
}
sort(ans.begin(), ans.end());
for(auto i: ans) cout << i << " ";
}
void solve()
{
for(int l = 1; l <= k+1; l++)
{
for(int r = n+k; r >= n; r--)
{
if(l-1+n+k-r<=k)
{
myset.insert(a[l]+a[r]);
}
}
}
for(auto i: myset) v.pb(i);
shuffle(v.begin(), v.end(), rng);
for(int i = 0; i < (int) v.size(); i++)
{
if(ktra(v[i]))
{
print(v[i]);
return;
}
}
}
signed main()
{
// auto start_time = chrono::high_resolution_clock::now();
// #ifdef ONLINE_JUDGE
// freopen("f.in", "r", stdin);
// #endif
// freopen("f.in", "r", stdin);
// freopen("kek.out", "w", stdout);
ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
int t=1;
// cin >> t;
for(int i = 1; i <= t; i++)
{
input();
solve();
}
// auto end_time = chrono::high_resolution_clock::now();
// double duration = chrono::duration_cast<chrono::milliseconds>(end_time - start_time).count();
// cout << "\n[ " << duration << " ms ]\n";
}
