#define wiwihorz
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC target("sse")
#pragma loop-opt(on)
#define rep(i, a, b) for(int i = a; i <= b; i ++)
#define rrep(i, a, b) for(int i = b; i >= a; i--)
#define ceil(a, b) ((a + b - 1) / (b))
#define all(x) x.begin(), x.end()
#define lld long double
#define pii pair<int, int>
#define random mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count())
using namespace std;
#define INF 1000000000000000000
#define MOD 1000000007
#define eps (1e-9)
#ifdef wiwihorz
#define print(a...) cerr<<"Line "<<__LINE__<<":",kout("[" + string(#a) + "] = ", a)
void vprint(auto L, auto R) { while(L < R) cerr << *L << " \n"[next(L)==R], ++L;}
void kout() { cerr << endl; }
template<class T1, class ... T2> void kout(T1 a, T2 ... e) { cerr << a << " ", kout(e...);}
#else
#define print(...) 0
#define vprint(...) 0
#endif
#define x first
#define y second
signed main() {
ios::sync_with_stdio(false), cin.tie(0);
int n, k;
cin >> n >> k;
vector<int> a(n + k + 1, 0);
rep(i, 1, n + k) cin >> a[i];
auto solve = [&](int val) {
vector<int> ans;
int l = 1, r = n + k, cost = k;
rep(i, l, r) {
while(r - 1 > i && a[r] > val - a[i])
r--, cost--;
if(a[i] + a[r] == val) {
ans.push_back(a[i]);
ans.push_back(a[r]);
r --;
}
else cost --;
}
if(cost < 0 || ans.size() < n) return vector<int>();
while(ans.size() > n) ans.pop_back();
sort(all(ans));
return ans;
};
if(n + k < 4 * k) {
rep(i, 0, k) rep(j, 0, k - i) {
int val = a[i + 1] + a[n + k - j];
vector<int> ans = solve(val);
if(ans.size() == n) {
rep(cur, 0, n - 1) cout << ans[cur] << " \n"[cur + 1 == n];
return 0;
}
}
}
else {
map<int, int> cnt;
rep(i, 1, 2 * k) rep(j, n - k + 1, n + k) cnt[a[i] + a[j]] ++;
for(auto i : cnt) if(i.y >= k) {
vector<int> ans = solve(i.x);
if(ans.size() == n) {
rep(cur, 0, n - 1) cout << ans[cur] << " \n"[cur + 1 == n];
return 0;
}
}
}
assert(0);
return 0;
}
