Submission #800129

#	Time	Username	Problem	Language	Result	Execution time	Memory
800129		PixelCat	Carnival Tickets (IOI20_tickets)	C++14	11 / 100	1 ms	596 KiB

tickets

#include "tickets.h"

#ifdef NYAOWO
#include "grader.cpp"
#endif

#include <bits/stdc++.h>
#define For(i, a, b) for(int i = a; i <= b; i++)
#define Forr(i, a, b) for(int i = a; i >= b; i--)
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define sz(x) ((int)x.size())
#define eb emplace_back
#define int LL
using namespace std;
using i32 = int32_t;
using LL = long long;
using pii = pair<int, int>;

int cost_single(int n, vector<int> v) {
    sort(all(v));
    int s = 0;
    int m = n / 2;
    For(i, 0, m - 1) {
        s += v[n - i - 1] - v[i];
    }
    return s;
}

int cost(int n, int m, int k, vector<vector<i32>> &x, vector<vector<i32>> &ans) {
    vector<vector<int>> game(k);
    For(i, 0, n - 1) For(j, 0, m - 1) if(ans[i][j] != -1) {
        game[ans[i][j]].eb(x[i][j]);
    }
    int res = 0;
    for(auto &g:game) res += cost_single(n, g);
    return res;
}

int find_maximum(i32 _k, vector<vector<i32>> x) {
    int k = _k;
    int n = sz(x);
    int m = sz(x[0]);
    vector<vector<i32>> answer(n, vector<i32>(m, 0));
    allocate_tickets(answer);
    return cost(n, m, k, x, answer);
}

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