oj.uz

Submission #289915

# Submission time Handle Problem Language Result Execution time Memory
289915 2020-09-03T08:34:14 Z 최은수(#5769) Hamburg Steak (JOI20_hamburg) C++17
15 / 100
 121 ms 10000 KB 
#include<iostream>
#include<vector>
#include<random>
#include<ctime>
#include<tuple>
#include<algorithm>
#define ep emplace
#define eb emplace_back
#define fi first
#define se second
#define all(x) (x).begin(),(x).end()
using namespace std;
typedef long long ll;
typedef pair<int,int>pi;
typedef pair<ll,ll>pl;
const int inf=1e9+7;
const ll INF=1e18;
inline bool check(const pair<pi,pi>&sq,const pi&p)
{
    return sq.fi.fi<=p.fi&&p.fi<=sq.fi.se&&sq.se.fi<=p.se&&p.se<=sq.se.se;
}
inline pi get1(const vector<pair<pi,pi> >&v)
{
    int xmx=-inf,ymx=-inf;
    for(auto&t:v)
        xmx=max(xmx,t.fi.fi),ymx=max(ymx,t.se.fi);
    return pi(xmx,ymx);
}
inline pair<pi,pi>get2(const vector<pair<pi,pi> >&v)
{
    int xmx=-inf,xmn=inf,ymx=-inf,ymn=inf;
    for(auto&t:v)
        xmx=max(xmx,t.fi.fi),ymx=max(ymx,t.se.fi),
        xmn=min(xmn,t.fi.se),ymn=min(ymn,t.se.se);
    pi p[4]={pi(xmx,ymx),pi(xmx,ymn),pi(xmn,ymx),pi(xmn,ymn)};
    for(int i=0;i<4;i++)
    {
        for(int j=i+1;j<4;j++)
        {
            bool f=1;
            for(auto&t:v)
            {
                if(!check(t,p[i])&&!check(t,p[j]))
                {
                    f=0;
                    break;
                }
            }
            if(f)
                return pair<pi,pi>(p[i],p[j]);
        }
    }
    return pair<pi,pi>(pi(-1,-1),pi(-1,-1));
}
tuple<pi,pi,pi>get3(const vector<pair<pi,pi> >&v)
{
    int xmx=-inf,xmn=inf,ymx=-inf,ymn=inf;
    for(auto&t:v)
        xmx=max(xmx,t.fi.fi),ymx=max(ymx,t.se.fi),
        xmn=min(xmn,t.fi.se),ymn=min(ymn,t.se.se);
    vector<pi>pv({pi(xmx,ymx),pi(xmx,ymn),pi(xmn,ymx),pi(xmn,ymn)});
    for(pi&p:pv)
    {
        vector<pair<pi,pi> >nxv;
        for(auto&t:v)
            if(!check(t,p))
                nxv.eb(t);
        auto cget=get2(nxv);
        if(cget.fi.fi!=-1)
            return tuple<pi,pi,pi>(p,cget.fi,cget.se);
    }
    return tuple<pi,pi,pi>(pi(-1,-1),pi(-1,-1),pi(-1,-1));
}
tuple<pi,pi,pi,pi>get4(const vector<pair<pi,pi> >&v)
{
    int xmx=-inf,xmn=inf,ymx=-inf,ymn=inf;
    for(auto&t:v)
        xmx=max(xmx,t.fi.fi),ymx=max(ymx,t.se.fi),
        xmn=min(xmn,t.fi.se),ymn=min(ymn,t.se.se);
    vector<pi>pv({pi(xmx,ymx),pi(xmx,ymn),pi(xmn,ymx),pi(xmn,ymn)});
    for(pi&p:pv)
    {
        vector<pair<pi,pi> >nxv;
        for(auto&t:v)
            if(!check(t,p))
                nxv.eb(t);
        auto cget=get3(nxv);
        if(get<0>(cget).fi!=-1)
            return tuple<pi,pi,pi,pi>(p,get<0>(cget),get<1>(cget),get<2>(cget));
    }
    return tuple<pi,pi,pi,pi>(pi(-1,-1),pi(-1,-1),pi(-1,-1),pi(-1,-1));
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n,k;
    cin>>n>>k;
    vector<pair<pi,pi> >v(n);
    for(auto&t:v)
        cin>>t.fi.fi>>t.se.fi>>t.fi.se>>t.se.se;
    if(k==1)
    {
        pi ans=get1(v);
        cout<<ans.fi<<' '<<ans.se<<endl;
        return 0;
    }
    if(k==2)
    {
        auto ans=get2(v);
        cout<<ans.fi.fi<<' '<<ans.fi.se<<' '<<ans.se.fi<<' '<<ans.se.se<<endl;
        return 0;
    }
    if(k==3)
    {
        auto ans=get3(v);
        cout<<get<0>(ans).fi<<' '<<get<0>(ans).se<<endl;
        cout<<get<1>(ans).fi<<' '<<get<1>(ans).se<<endl;
        cout<<get<2>(ans).fi<<' '<<get<2>(ans).se<<endl;
        return 0;
    }
    {
        auto ans=get4(v);
        if(get<0>(ans).fi!=-1)
        {
            cout<<get<0>(ans).fi<<' '<<get<0>(ans).se<<endl;
            cout<<get<1>(ans).fi<<' '<<get<1>(ans).se<<endl;
            cout<<get<2>(ans).fi<<' '<<get<2>(ans).se<<endl;
            cout<<get<3>(ans).fi<<' '<<get<3>(ans).se<<endl;
            return 0;
        }
    }
    int xmx=-inf,xmn=inf,ymx=-inf,ymn=inf;
    for(auto&t:v)
        xmx=max(xmx,t.fi.fi),ymx=max(ymx,t.se.fi),
        xmn=min(xmn,t.fi.se),ymn=min(ymn,t.se.se);
    vector<pi>ckv;
    for(auto&t:v)
        if(t.fi.fi<=xmn)
            ckv.eb(xmn,t.se.fi);
    sort(all(ckv));
    ckv.erase(unique(all(ckv)),ckv.end());
    mt19937 gen(time(NULL));
    for(int i=0;i<(int)ckv.size();i++)
        swap(ckv[i],ckv[i+gen()%((int)ckv.size()-i)]);
    for(int i=0;i<min(500,(int)ckv.size());i++)
    {
        auto&p=ckv[i];
        vector<pair<pi,pi> >nxv;
        for(auto&t:v)
            if(!check(t,p))
                nxv.eb(t);
        auto ans=get3(nxv);
        if(get<0>(ans).fi!=-1)
        {
            cout<<p.fi<<' '<<p.se<<endl;
            cout<<get<0>(ans).fi<<' '<<get<0>(ans).se<<endl;
            cout<<get<1>(ans).fi<<' '<<get<1>(ans).se<<endl;
            cout<<get<2>(ans).fi<<' '<<get<2>(ans).se<<endl;
            return 0;
        }
    }
    return 0;
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct

Subtask #3
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct

Subtask #4
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 416 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Incorrect 50 ms 512 KB Unexpected end of file - int32 expected
15 Halted 0 ms 0 KB -

Subtask #5
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 95 ms 3456 KB Output is correct
6 Correct 93 ms 3456 KB Output is correct
7 Correct 90 ms 3536 KB Output is correct
8 Correct 97 ms 3456 KB Output is correct

Subtask #6
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 108 ms 3528 KB Output is correct
6 Correct 98 ms 3456 KB Output is correct
7 Correct 90 ms 3456 KB Output is correct
8 Correct 101 ms 3532 KB Output is correct

Subtask #7
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 103 ms 5700 KB Output is correct
14 Correct 99 ms 5616 KB Output is correct
15 Correct 116 ms 5696 KB Output is correct
16 Correct 104 ms 5616 KB Output is correct
17 Correct 95 ms 5616 KB Output is correct
18 Correct 101 ms 4596 KB Output is correct
19 Correct 103 ms 7660 KB Output is correct
20 Correct 111 ms 10000 KB Output is correct
21 Correct 113 ms 7744 KB Output is correct
22 Correct 121 ms 7744 KB Output is correct
23 Correct 105 ms 7744 KB Output is correct
24 Correct 105 ms 7720 KB Output is correct

Subtask #8
0 / 79.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 416 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Incorrect 50 ms 512 KB Unexpected end of file - int32 expected
15 Halted 0 ms 0 KB -