Submission #1291696

#	Time	Username	Problem	Language	Result	Execution time	Memory
1291696		lucaskojima	Carnival Tickets (IOI20_tickets)	C++17	27 / 100	266 ms	51344 KiB

tickets

#include "bits/stdc++.h"
#include "tickets.h"
#define sz(x) (int)size(x)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)

using namespace std;
using ll = long long;
using pii = pair<int, int>;

const char nl = '\n';
const int INF = 0x3f3f3f3f;
const ll LINF = 0x3f3f3f3f3f3f3f3f;

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

	vector pos(n, vector<int>(m, -1));
	long long ans = 0;

	vector<pii> v;
	for (int i = 0; i < n; i++) {
		ans += x[i][m - 1];
		pos[i][m - 1] = 0;
		v.push_back({-x[i][m - 1]-x[i][0], i});
	}

	sort(rall(v));

	for (int i = 0; i < n / 2; i++) {
		auto [val, id] = v[i];
		ans += val;
		pos[id][m - 1] = -1;
		pos[id][0] = 0;
	}

	allocate_tickets(pos);
	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