Submission #559885

#	Time	Username	Problem	Language	Result	Execution time	Memory
559885		AlperenT	Carnival Tickets (IOI20_tickets)	C++17	27 / 100	471 ms	51288 KiB

tickets

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

using namespace std;

struct Item{
	int x, i, j;

	bool operator < (const Item &sc) const{
		return x < sc.x;
	}
};

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

	vector ans(n, vector(m, -1));
	long long ansvalue = 0;

	vector<Item> v; 

	for(int i = 0; i < n; i++){
		for(int j = 0; j < k; j++){
			ansvalue += arr[i][m - 1 - j];
		}
	}

	for(int i = 0; i < n; i++){
		for(int j = 0; j < k; j++){
			v.push_back({arr[i][j] + arr[i][m - k + j], i, j});
		}
	}

	sort(v.begin(), v.end());

	for(int i = 0; i < (n * k) / 2; i++){
		ansvalue -= v[i].x;

		ans[v[i].i][v[i].j] = v[i].j;
	}

	for(int i = (n * k) / 2; i < n * k; i++){
		ans[v[i].i][m - k + v[i].j] = v[i].j;
	}

	allocate_tickets(ans);
	return ansvalue;
}

• 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