제출 #302255

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
302255		arnold518	카니발 티켓 (IOI20_tickets)	C++14	14 / 100	734 ms	71224 KiB

tickets

#include "tickets.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 1500;

int N, M, K;
int A[MAXN+10][MAXN+10];
int P[MAXN+10];
int ans2[MAXN+10][MAXN+10];
ll ans;

int l[MAXN+10], r[MAXN+10], chk[MAXN+10];

ll find_maximum(int _K, vector<vector<int>> _X)
{
	N=_X.size(); M=_X[0].size(); K=_K;
	for(int i=1; i<=N; i++) for(int j=1; j<=M; j++) A[i][j]=_X[i-1][j-1];

	for(int i=1; i<=N; i++) for(int j=1; j<=M; j++) if(A[i][j]==1) P[i]++;

	for(int i=1; i<=N; i++) r[i]=M+1;

	for(int i=1; i<=K; i++)
	{
		vector<pii> V;
		for(int j=1; j<=N; j++) V.push_back({P[j], j});
		sort(V.begin(), V.end(), greater<pii>());
		for(int j=1; j<=N; j++) chk[j]=0;
		for(int j=0; j<N/2; j++) chk[V[j].second]=1, P[V[j].second]--;

		for(int j=1; j<=N; j++)
		{
			if(chk[j])
			{
				r[j]--;
				ans+=A[j][r[j]];
				ans2[j][r[j]]=i;
			}
			else
			{
				l[j]++;
				ans-=A[j][l[j]];
				ans2[j][l[j]]=i;
			}
		}
	}

	vector<vector<int>> answer;
	answer=vector<vector<int>>(N, vector<int>(M));
	for(int i=1; i<=N; i++) for(int j=1; j<=M; j++) answer[i-1][j-1]=ans2[i][j]-1;
	allocate_tickets(answer);
	return ans;
}

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