제출 #441237

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
441237		Sarah_Mokhtar	Table Tennis (info1cup20_tabletennis)	C++14	9 / 100	3105 ms	225920 KiB

tabletennis

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define read freopen("in.txt","r",stdin);freopen("out.txt","w",stdout)
const ll N=1e6+10,M=505,OO=1e16,mod=1e9+7;
int n,k;
ll a[N];
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>n>>k;
    unordered_map<ll,int>cnt;
    for(int i=0;i<n+k;++i){
        cin>>a[i];
        cnt[a[i]]++;
    }
    vector<ll>ans;
    for(int i=0;i<=k;++i){
        for(int j=n-1;j>=n-k;--j){
            ll sum=a[i]+a[j];
            int pairs=0;
            vector<ll>cur;
            for(int l=0;l<n;++l){
                if(cnt[sum-a[l]]){
                    cur.push_back(a[l]);
                    cur.push_back(sum-a[l]);
                    ++pairs;
                    cnt[sum-a[l]]--;
                    cnt[a[l]]--;
                }
                if(pairs==n/2){
                    ans=cur;
                    break;
                }
            }
            if(!ans.empty()) break;
        }
        if(!ans.empty()) break;
    }
    sort(ans.begin(),ans.end());
    for(ll i:ans) cout<<i<<' ';
    cout<<"\n";
}

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