Submission #1305411

#TimeUsernameProblemLanguageResultExecution timeMemory
1305411neonglitchCarnival Tickets (IOI20_tickets)C++20
100 / 100
458 ms92692 KiB
#include "tickets.h"
#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;
typedef long long ll;
long long find_maximum(int k, std::vector<std::vector<int>> x) {
	int n = x.size();
	int m = x[0].size();
	
	std::vector<std::vector<int>> answer(n,vector<int>(m,-1));
	ll ans=0;
	vector<pair<ll,int>> pos;

	for(int i=0;i<n;i++)
	{
		for(int j=0;j<k;j++)
		{
			ans-=x[i][j];
			// answer[i][j]=j;
			pos.push_back({x[i][j]+x[i][m-k+j],i});
		}
	}
	sort(rbegin(pos),rend(pos));
	vector<int> cnt(n+1);
	for(int i=0;i<(n*k)/2;i++)
	{
		cnt[pos[i].second]++;
		ans+=pos[i].first;
	}
	int l=0;
	for(int i=0;i<n;i++)
	{
		for(int j=0;j<k-cnt[i];j++)
		{
			answer[i][j]=(l++)%k;
		}
		int r=l;
		for(int j=m-1;j>=m-cnt[i];j--)
		{
			answer[i][j]=(r++)%k;
		}
	}
	// for(int i=0;i<n;i++)
	// {
		// for(int j=0;j<m;j++)
		// {
			// cout<<answer[i][j]<<' ';
		// }
		// cout<<endl;
	// }
	allocate_tickets(answer);
	return ans;
}

// int main()
// {
	// int n,m,k;
	// cin>>n>>m>>k;
	// vector<vector<int>> x(n,vector<int>(m));
	// for(int i=0;i<n;i++)
	// {
		// for(int j=0;j<m;j++)
		// {
			// cin>>x[i][j];
		// }
	// }
	// cout<<find_maximum(k,x)<<endl;
// }
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