Submission #1188442

#	Time	Username	Problem	Language	Result	Execution time	Memory
1188442		alexdd	Garden (JOI23_garden)	C++20	30 / 100	3115 ms	933732 KiB

garden

#include <bits/stdc++.h>
using namespace std;
int n,m,d;
map<pair<int,int>,vector<int>> onpoz;
int poz[500005],cntactive;
bool active[500005];
pair<int,int> special[500005];

int goup[10005],goleft[10005];

signed main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);
    cin>>n>>m>>d;
    for(int i=0;i<n;i++)
    {
        int p,q;
        cin>>p>>q;
        onpoz[{p,q}].push_back(i);
        onpoz[{p,q+d}].push_back(i);
        onpoz[{p+d,q}].push_back(i);
        onpoz[{p+d,q+d}].push_back(i);
    }
    for(int i=0;i<m;i++)
    {
        int p,q;
        cin>>p>>q;
        special[i] = {p,q};
    }
    int rez = d*d;
    for(int jos=0;jos<2*d;jos++)
    {
        for(int i=0;i<d;i++)
        {
            for(int x:onpoz[{jos,i}])
            {
                if(!active[x])
                {
                    cntactive++;
                    active[x] = 1;
                }
                poz[x] = jos;
            }
        }
        if(cntactive == n)
        {
            int minlin=jos;
            for(int x=0;x<n;x++)
                minlin = min(minlin, poz[x]);
            goup[jos] = minlin;
        }
        else
            goup[jos] = -1;
    }

    cntactive=0;
    for(int x=0;x<n;x++)
        active[x]=0;
    for(int jos=0;jos<2*d;jos++)
    {
        for(int i=0;i<d;i++)
        {
            for(int x:onpoz[{i,jos}])
            {
                if(!active[x])
                {
                    cntactive++;
                    active[x] = 1;
                }
                poz[x] = jos;
            }
        }
        if(cntactive == n)
        {
            int minlin=jos;
            for(int x=0;x<n;x++)
                minlin = min(minlin, poz[x]);
            goleft[jos] = minlin;
        }
        else
            goleft[jos] = -1;
    }

    for(int jos=d;jos<2*d;jos++)
    {
        for(int dr=d;dr<2*d;dr++)
        {
            assert(goup[jos]!=-1);
            assert(goleft[dr]!=-1);
            for(int le=goleft[dr];le>=0;le--)
            {
                int sus = goup[jos];
                if((dr-le+1) * (jos-sus+1) >= rez)
                    break;
                for(int x=0;x<m;x++)
                {
                    if((le <= special[x].second && special[x].second <= dr) || (le <= special[x].second + d && special[x].second + d <= dr))
                    {

                    }
                    else
                    {
                        if(special[x].first + d <= jos)
                            sus = min(sus, special[x].first + d);
                        else
                            sus = min(sus, special[x].first);
                    }
                    if((dr-le+1) * (jos-sus+1) >= rez)
                        break;
                }
                rez = min(rez, (dr-le+1) * (jos-sus+1));
            }
        }
    }
    cout<<rez;
    return 0;
}
/*

2 1 5
1 4
2 2
0 0


patratele se repeta din d in d

obs: o sa existe tot timpu o solutie care are fiecare latura <d


*/

• Subtask 1: 0 / 15
• Subtask 2: 6 / 6
• Subtask 3: 8 / 8
• Subtask 4: 16 / 16
• Subtask 5: 0 / 30
• Subtask 6: 0 / 25