Submission #364042

#	Time	Username	Problem	Language	Result	Execution time	Memory
364042		wind_reaper	Carnival Tickets (IOI20_tickets)	C++17	16 / 100	688 ms	71380 KiB

tickets

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

using namespace std;

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

	vector<vector<int>> ans(n, vector<int>(m, -1));

	long long a = 0; 
	vector<pair<int64_t, int>> b(n);
	for(int i = 0; i < n; i++){
		ans[i][m-1] = 0;
		b[i] = {1LL*(x[i][0] + x[i][m-1]), i};
		a += 1LL*x[i][m-1];
	}
	sort(b.begin(), b.end());
	for(int i = 0; i < n/2; i++){
		a -= b[i].first;
		ans[b[i].second][0] = 0; 
		ans[b[i].second][m-1] = -1;
	}

	allocate_tickets(ans);
	return a;
}

• Subtask 1: 0 / 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