This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
typedef long long lo;
#define fi first
#define se second
#define endl "\n"
#define pb push_back
#define int long long
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)
#define _ << " " <<
const lo inf = 1000000000;
const lo li = 500005;
const lo mod = 1000000007;
int n,m,a[li],k,flag,t;
int cev;
string s;
vector<int> v;
inline void yaz(int l,int r,int sum){
//~ cout<<l _ r _ sum<<endl;
while(l<=r){
if(l==r)break;
if(a[l]+a[r]==sum){v.pb(a[l]),v.pb(a[r]);l++;r--;continue;}
if(a[l]+a[r]<sum)l++;
else r--;
}
sort(v.begin(),v.end());
for(auto go:v)cout<<go<<" ";
exit(0);
}
int32_t main(void){
fio();
cin>>n>>k;
for(int i=1;i<=n+k;i++){
cin>>a[i];
}
sort(a+1,a+n+k+1);
for(int i=1;i<=k+1;i++){
for(int j=n-1+i;j<=n+k;j++){
int sum=a[i]+a[j];
int hak=k-(i-1+n+k-j);
int bas=i;
int son=j;
while(bas<=son){
if(bas==son){hak--;break;}
if(a[bas]+a[son]==sum){bas++;son--;continue;}
hak--;
if(a[bas]+a[son]<sum)bas++;
else son--;
}
if(hak<0)continue;
//~ cout<<i _ j _ sum _ a[i] _ a[j]<<endl;
yaz(i,j,sum);
}
}
return 0;
}
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