제출 #300706

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
300706		CodePlatina	카니발 티켓 (IOI20_tickets)	C++14	25 / 100	1262 ms	84224 KiB

tickets

#include "tickets.h"
#include <vector>
#include <algorithm>
#include <string>
#include <utility>
#define pii pair<int, int>
#define piii pair<int, pii>
#define pll pair<long long, long long>
#define plll pair<long long, pll>
#define ff first
#define ss second
#define ee ss.ff
#define rr ss.ss

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

//	int X[n], Y[n];
//	for(int i = 0; i < n; ++i) X[i] = min_element(x[i].begin(), x[i].end()) - x[i].begin(), Y[i] = max_element(x[i].begin(), x[i].end()) - x[i].begin(), ans += x[i][Y[i]];
//    vector<pii> tmp; for(int i = 0; i < n; ++i) tmp.push_back({x[i][X[i]] + x[i][Y[i]], i});
//    sort(tmp.begin(), tmp.end());
//    for(int i = 0; i < n / 2; ++i) ans -= tmp[i].ff, ret[tmp[i].ss][X[i]] = 0;
//    for(int i = n / 2; i < n; ++i) ret[tmp[i].ss][Y[i]] = 0;

    vector<piii> tmp; for(int i = 0; i < n; ++i) for(int j = 0; j < m; ++j) tmp.push_back({x[i][j], {i, j}});
    sort(tmp.begin(), tmp.end());
    vector<int> lsX[n], lsY[n];
    for(int i = 0; i < n * k / 2; ++i) lsX[tmp[i].ee].push_back(tmp[i].rr), ans -= tmp[i].ff;
    for(int i = n * m - n * k / 2; i < n * m; ++i) lsY[tmp[i].ee].push_back(tmp[i].rr), ans += tmp[i].ff;

    for(int i = 0; i < k; ++i)
    {
        vector<pii> tmp2; for(int j = 0; j < n; ++j) tmp2.push_back({lsX[j].size(), j});
        sort(tmp2.begin(), tmp2.end());
        for(int j = 0; j < n / 2; ++j) ret[tmp2[j].ss][lsY[tmp2[j].ss].back()] = i, lsY[tmp2[j].ss].pop_back();
        for(int j = n / 2; j < n; ++j) ret[tmp2[j].ss][lsX[tmp2[j].ss].back()] = i, lsX[tmp2[j].ss].pop_back();
    }

	allocate_tickets(ret);
	return ans;
}

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