Submission #616050

#	Time	Username	Problem	Language	Result	Execution time	Memory
616050		yanndev	Carnival Tickets (IOI20_tickets)	C++17	27 / 100	465 ms	73084 KiB

tickets

#include "tickets.h"
#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
using namespace std;

ll find_maximum(int k, vector<vector<int>> x) {
	int n = x.size();
	int m = x[0].size();

	if (m == 1) {
		vector<vector<int>> answer;
		vector<int> vals {};
		ll score = 0;
		for (int i = 0; i < n; i++) {
			vector<int> row (m);
			for (int j = 0; j < m; j++) {
				vals.push_back(x[i][j]);
				if (j < k) {
					row[j] = j;
				} else {
					row[j] = -1;
				}
			}
			
			answer.push_back(row);
		}

		sort(vals.begin(), vals.end());
		for (auto& x: vals)
			score += (ll)abs(x - vals[n / 2]);
		allocate_tickets(answer);
		return score;
	}

	if (k == 1) {
		vector<vector<int>> ans (n, vector<int> (m, -1));
		vector<pair<int, int>> op {};

		ll score = 0;
		for (int i = 0; i < n; i++) {
			ans[i][m - 1] = 0;
			score += x[i][m - 1];
			op.push_back({-(x[i][m - 1] + x[i][0]), i});
		}

		sort(op.begin(), op.end());
		reverse(op.begin(), op.end());

		for (int i = 0; i < n / 2; i++) {
			score += op[i].fi;
			ans[op[i].se][m - 1] = -1;
			ans[op[i].se][0] = 0;
		}

		allocate_tickets(ans);
		return score;
	}

	return 0;
}

• 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