Submission #1039712

#	Time	Username	Problem	Language	Result	Execution time	Memory
1039712		DorostWef	Carnival Tickets (IOI20_tickets)	C++17	27 / 100	345 ms	73212 KiB

tickets

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

using namespace std;
#define F first
#define S second
const int N = 1504;
int c[N];

long long find_maximum(int k, std::vector<std::vector<int>> x) {
	int n = x.size();
	int m = x[0].size();
	std::vector<std::vector<int>> answer;
	for (int i = 0; i < n; i++) {
		std::vector<int> row(m);
		for (int j = 0; j < m; j++) {
			row[j] = -1;
		}
		answer.push_back(row);
	}
	long long ans = 0;
	vector <pair <long long, int>> v;
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < k; j++) {
			ans += x[i][m - j - 1];
			v.push_back(make_pair (x[i][m - j - 1] + x[i][k - j - 1], i));
		}
	}
	sort (v.begin(), v.end());
	for (int i = 0; i < (n / 2) * k; i++) {
		ans -= v[i].F;
		c[v[i].S]++;
	}
	for (int i = 0; i < n; i++ ){
		for (int j = 0; j < m; j++) {
			if (j < c[i])
				answer[i][j] = j;
			else if (j >= m - (k - c[i])) {
				answer[i][j] = c[i] + j - (m - (k - c[i]));
			} else
				answer[i][j] = -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