Submission #307126

#	Time	Username	Problem	Language	Result	Execution time	Memory
307126		Ruxandra985	Carnival Tickets (IOI20_tickets)	C++14	0 / 100	1 ms	256 KiB

tickets

#include <bits/stdc++.h>
#include "tickets.h"
#define DIMN 1510

using namespace std;


pair <int , int> v[DIMN] , w[DIMN];
int f[DIMN];

long long find_maximum(int k, vector<vector<int>> x) {
	int n = x.size() , i , pv , pw;
	int m = x[0].size();
	long long sol = 0;
	vector<vector<int>> answer;
	for (i = 0; i < n; i++) {
		vector<int> row;
		row.resize(m , -1);
		answer.push_back(row);
	}


	if (m == 1){

        for (i = 0 ; i < n ; i++){
            answer[i][0] = 0;
            v[i] = make_pair(x[i][0] , i);
        }

        sort (v , v + n);

        for (i = 0 ; i < n ; i++){

            if (i < n / 2)
                sol = sol - v[i].first;
            else
                sol = sol + v[i].first;
        }


	}
	if (k == 1){

        for (i = 0 ; i < n ; i++){
            v[i] = make_pair(x[i][0] , i);
            w[i] = make_pair(x[i].back() , i);
        }

        sort (v , v + n);
        sort (w , w + n);

        pv = 0;
        pw = n - 1;

        for (i = 0 ; i < n / 2 ; i++){

            while (f[v[pv].second] == 1)
                pv++;

            answer[v[pv].second][0] = 0;
            f[v[pv].second] = 1;
            sol -= v[pv].first;
            pv++;

            while (f[w[pw].second] == 1)
                pw--;

            answer[w[pw].second][m - 1] = 0;
            f[w[pw].second] = 1;
            sol += w[pw].first;
            pw--;


        }


	}

	allocate_tickets(answer);
	return sol;
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 16
• Subtask 3: 0 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 12
• Subtask 6: 0 / 23
• Subtask 7: 0 / 10