Submission #1208036

#	Time	Username	Problem	Language	Result	Execution time	Memory
1208036		shmax	Carnival Tickets (IOI20_tickets)	C++17	27 / 100	313 ms	51336 KiB

tickets

#include "tickets.h"
#include <bits/stdc++.h>

using namespace std;
template<typename T>
using vec = vector<T>;
#define i32 int32_t
#define int long long
#define len(x) ((int)(x).size())

long long find_maximum(i32 k, std::vector<std::vector<i32>> x) {
    int n = x.size();
    int m = x[0].size();
    vec<vec<i32>> d(n, vec<i32>(m, -1));
//    allocate_tickets(vec<vec<i32>>(n, vec<i32>(m, 0)));
    int S = 0;
    vec<pair<int, int>> deltas;
    for (int i = 0; i < n; i++) {
        d[i][len(d[i]) - 1] = 0;
        S += x[i].back();
        deltas.emplace_back(-x[i].back() - x[i][0], i);
    }
    sort(deltas.rbegin(), deltas.rend());
    for (int t = 0; t < n / 2; t++) {
        auto [xy, i] = deltas[t];
        d[i][len(d[i]) - 1] = -1;
        d[i][0] = 0;
        S += xy;
    }
    allocate_tickets(d);
    return S;
}

• 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