#include<bits/stdc++.h>
using namespace std;
int n,k,a[160000];
void read()
{
cin>>n>>k;
for(int i=1; i<=n+k; i++)
{
cin>>a[i];
}
}
bool solve(int l,int r)
{
vector<int> v;
int br=n/2,sum=a[l]+a[r];
while(br>0&&l<r)
{
if(a[l]+a[r]==sum)
{
v.push_back(a[l]);
v.push_back(a[r]);
l++;
r--;
br--;
}
else
{
if(a[l]+a[r]>sum)
{
r--;
}
else
{
l++;
}
}
}
if(v.size()==n)
{
sort(v.begin(),v.end());
for(int i=0; i<v.size(); i++)
{
cout<<v[i]<<' ';
}
exit(0);
}
return 0;
}
int main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
read();
for(int i=1; i<=k+1; i++)
{
for(int j=n+k; j>=n+i-1; j--)
{
solve(i,j);
}
}
return 0;
}
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