Submission #1091515

#	Time	Username	Problem	Language	Result	Execution time	Memory
1091515		efishel	Carnival Tickets (IOI20_tickets)	C++17	27 / 100	348 ms	73148 KiB

tickets

#include "tickets.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vll = vector <ll>;
using ii = pair <ll, ll>;
using vii = vector <ii>;
using vi = vector <int>;
using vvi = vector <vi>;

ll find_maximum (int k, vvi x) {
    ll n = x.size(), m = x[0].size();
    vii th;
    for (ll i = 0; i < n; i++) {
        th.push_back({ x[i][0]+x[i][m-1], i });
    }
    sort(th.begin(), th.end());
    vvi answer(n, vi(m, -1));
    ll ans = 0;
    for (ll i = 0; i < n/2; i++) {
        ll j = th[i].second;
        answer[j][0] = 0;
        ans -= x[j][0];
    }
    for (ll i = n/2; i < n; i++) {
        ll j = th[i].second;
        answer[j][m-1] = 0;
        ans += x[j][m-1];
    }
    allocate_tickets(answer);
    return ans;
}

• Subtask 1: 11 / 11
• Subtask 2: 16 / 16
• Subtask 3: 0 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 12
• Subtask 6: 0 / 23
• Subtask 7: 0 / 10