Submission #1318289

#	Time	Username	Problem	Language	Result	Execution time	Memory
1318289		AzeTurk810	Table Tennis (info1cup20_tabletennis)	C++20	72 / 100	3094 ms	31636 KiB

tabletennis

/*
Telebe of Adicto && Mamedov yani AzeTurk810
I see humans but no humanity
*/
#include <algorithm>
#include <cassert>
#include <iostream>
#include <map>
#include <set>
#include <vector>

// mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

using ll = long long;
using namespace std;

#define ln '\n'
#define INFi 1e9
#define INFll 1e18
#define int ll
#undef ONPC

#ifdef ONPC
#include <algo.hpp>
#else
#define dbg(...)
#define dbg_out(...)
#endif

char solve() {
    int N, K;
    if (!(cin >> N >> K))
        return 1;
    int M = N + K;
    vector<int> A(M);
    for (int i = 0; i < M; i++)
        cin >> A[i];
    sort(A.begin(), A.end());
    vector<int> sums;
    for (int i = 0; i <= K; i++) {
        for (int j = M - 1; j >= max(0LL, M - K - 2); --j) {
            sums.push_back(A[i] + A[j]);
        }
    }
    sort(sums.begin(), sums.end());
    sums.erase(unique(sums.begin(), sums.end()), sums.end());
    for (int sum : sums) {
        dbg(sum);
        map<int, int> cnt;
        multiset<int> mst;
        for (int i = 0; i < M; i++) {
            mst.insert(A[i]);
            int tar = sum - A[i];
            if (cnt[tar] > 0) {
                cnt[tar]--;
            } else {
                cnt[A[i]]++;
            }
        }
        for (auto [num, cnt] : cnt) {
            dbg(cnt);
            dbg(num);
            dbg(mst);
            while (cnt > 0) {
                cnt--;
                assert(mst.find(num) != mst.end());
                mst.erase(mst.find(num));
            }
        }
        if (mst.size() >= N) {
            vector<int> ans;
            for (int i : mst) {
                ans.push_back(i);
            }
            int i = 0, j = ans.size() - 1;
            vector<int> res;
            while (i < j) {
                res.push_back(ans[i++]);
                res.push_back(ans[j--]);
            }
            sort(res.begin(), res.end());
            for (int i = 0; i < N; i++) {
                cout << res[i] << ' ';
            }
            cout << ln;
            return 0;
        }
    }
    assert(0);
    return 0;
}

// Attack on titan<3

signed main() {
    ios::sync_with_stdio(0);
    cin.tie(nullptr);
    int t = 1e9;
    // cin >> t;
    for (int cases = 0; cases < t; cases++) {
        if (solve())
            break;
#ifdef ONPC
        cerr << "__________\n";
#endif
    }
}
// Just Imaginary
/*
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣀⣀⠀⠀⠀⢀⣴⣾⠀⠀⠀⡀⢀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣿⣿⣿⣦⣾⣿⣿⣿⣿⣿⡆⠁⠀⢀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠹⣿⣿⣿⣿⣿⣿⣿⣿⡿⠁⠀⡠⠂⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⠠⠔⠚⣿⣿⣿⣿⣿⣦⡄⠀⠁⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⢀⠠⠐⢂⠉⡀⣀⣤⣄⢻⣿⣿⡟⢈⡹⣿⡀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⡀⠄⠂⠈⠀⣶⣤⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠘⣷⡀⠀⡀⠐⠂⠐⢄
⠀⠀⠀⠀⠀⠀⠀⣿⣿⠟⠿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣧⣀⣾⣷⠯⠀⠤⠤⠄⠈
⠀⠀⠀⠀⠀⠀⣼⣿⡟⠀⠀⣹⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣄⡀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⣰⣿⠋⠀⠀⢠⣾⣿⣿⣿⣿⣿⣭⠟⢻⣿⣿⣿⣿⡿⠁⠀⠀⠀⠀
⠀⠀⠀⣀⣶⡟⠁⠀⢾⣶⣿⠟⠉⠈⢻⣿⣿⣿⣦⣜⠀⠛⠛⠿⠁⠀⠀⠀⠀⠀
⠚⠻⠿⠿⡿⠁⠀⢠⣿⣿⠁⠀⣠⠖⠋⠉⠻⣿⣿⣿⣶⡀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⣰⣿⡿⠃⠠⠊⠁⠀⠀⠀⠀⠈⢿⣿⣿⠟⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⢀⣴⡿⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⣠⣾⠏⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⢀⣴⠾⠟⠛⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
*/

• Subtask 1: 11 / 11
• Subtask 2: 9 / 9
• Subtask 3: 14 / 14
• Subtask 4: 15 / 15
• Subtask 5: 9 / 9
• Subtask 6: 14 / 14
• Subtask 7: 0 / 15
• Subtask 8: 0 / 13