oj.uz

답안 #1113231

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1113231 2024-11-16T06:05:51 Z ttamx Growing Vegetables is Fun 5 (JOI24_vegetables5) C++17
100 / 100
 4959 ms 40872 KB 
#include<bits/stdc++.h>
#pragma GCC optimize("Ofast,unroll-loops")

using namespace std;

const int N=3e5+5;
const int INF=INT_MAX/2;

int n;
int a[3*N],b[N],c[N],pos[3*N];
bool lo[3*N],d1[3*N],d2[3*N];

struct Info{
    int sum,pre,suf,mx;
    static Info unit(){
        return {0,-INF,-INF,-INF};
    }
    friend Info operator+(const Info &l,const Info &r){
        return {l.sum+r.sum,max(l.pre,l.sum+r.pre),max(r.suf,r.sum+l.suf),max({l.mx,r.mx,l.suf+r.pre})};
    }
};

struct Stack{
    using P = pair<Info,int>;
    stack<P> s;
    stack<Info> p;
    bool empty(){return s.empty();}
    P front(){return s.top();}
    P back(){return s.top();}
    void push_front(Info x,int v){
        s.emplace(x,v);
        if(p.empty())p.emplace(x);
        else p.emplace(x+p.top());
    }
    void push_back(Info x,int v){
        s.emplace(x,v);
        if(p.empty())p.emplace(x);
        else p.emplace(p.top()+x);
    }
    void push_front(P x){push_front(x.first,x.second);}
    void push_back(P x){push_back(x.first,x.second);}
    void pop_back(){s.pop();p.pop();}
    void pop_front(){s.pop();p.pop();}
    Info query(){return p.empty()?Info::unit():p.top();}
};

struct Deque{
    using P = pair<Info,int>;
    deque<P> dq;
    stack<Info> l,r;
    void rebalance(bool left){
        int s=dq.size();
        int m=(s+left)/2;
        while(!l.empty())l.pop();
        while(!r.empty())r.pop();
        {
            Info sum=Info::unit();
            for(int i=m-1;i>=0;i--){
                sum=dq[i].first+sum;
                l.emplace(sum);
            }
        }
        {
            Info sum=Info::unit();
            for(int i=m;i<s;i++){
                sum=sum+dq[i].first;
                r.emplace(sum);
            }
        }
    }
    bool empty(){return dq.empty();}
    int size(){return dq.size();};
    P front(){return dq.front();}
    P back(){return dq.back();}
    void push_front(Info x,int v){
        dq.emplace_front(x,v);
        if(l.empty())l.emplace(x);
        else l.emplace(x+l.top());
    }
    void push_back(Info x,int v){
        dq.emplace_back(x,v);
        if(r.empty())r.emplace(x);
        else r.emplace(r.top()+x);
    }
    void push_front(P x){push_front(x.first,x.second);}
    void push_back(P x){push_back(x.first,x.second);}
    void pop_front(){
        assert(!dq.empty());
        if(l.empty())rebalance(true);
        dq.pop_front();
        l.pop();
    }
    void pop_back(){
        assert(!dq.empty());
        if(r.empty())rebalance(false);
        dq.pop_back();
        r.pop();
    }
    Info query(){
        if(dq.empty())return Info::unit();
        if(l.empty())return r.top();
        if(r.empty())return l.top();
        return l.top()+r.top();
    }
};

void calc(int *b,bool *d,int k){
    int st=0,ed=0;
    Stack q1,q3;
    Deque q2;
    auto work=[&](int i){
        if(lo[i]){
            while(!q1.empty()&&q1.back().second>=pos[i]){
                q2.push_front(q1.back());
                q1.pop_back();
            }
            while(!q2.empty()&&q2.front().second<pos[i]){
                q1.push_back(q2.front());
                q2.pop_front();
            }
            while(!q3.empty()&&q3.front().second<pos[i]){
                q1.push_back(q3.front());
                q3.pop_front();
            }
        }else{
            while(!q3.empty()&&q3.front().second<=pos[i]){
                q2.push_back(q3.front());
                q3.pop_front();
            }
            while(!q2.empty()&&q2.back().second>pos[i]){
                q3.push_front(q2.back());
                q2.pop_back();
            }
            while(!q1.empty()&&q1.back().second>pos[i]){
                q3.push_front(q1.back());
                q1.pop_back();
            }
        }
    };
    for(int i=0;i<3*n;i++){
        while(st<n&&b[st]<a[i]-k)st++;
        while(st>0&&b[st-1]>=a[i]-k)st--;
        while(ed<n&&b[ed]<=a[i]+k)ed++;
        while(ed>0&&b[ed-1]>a[i]+k)ed--;
        work(i);
        Info cur{1,1-ed,1+st,1+st-ed};
        if(lo[i])q2.push_front(cur,pos[i]);
        else q2.push_back(cur,pos[i]);
        if(i>=n){
            work(i-n);
            if(lo[i-n])q2.pop_front();
            else q2.pop_back();
            d[i]=(q1.query()+q2.query()+q3.query()).mx<=0;
        }
    }
}

bool check(int k){
    calc(b,d1,k);
    calc(c,d2,k);
    for(int i=n;i<2*n;i++){
        if((d1[i]&&d2[i+n])||(d2[i]&&d1[i+n])){
            return true;
        }
    }
    return false;
}

int main(){
    cin >> n;
    vector<pair<int,int>> vals;
    for(int i=0;i<2*n;i++){
        cin >> a[i];
        vals.emplace_back(a[i],i>n?~i:i);
    }
    sort(vals.begin(),vals.end());
    for(int i=0;i<2*n;i++){
        int j=vals[i].second;
        pos[j<0?~j:j]=i;
    }
    for(int i=2*n;i<3*n;i++){
        a[i]=a[i-2*n];
        pos[i]=pos[i-2*n];
    }
    for(int i=0;i<2*n;i++){
        lo[i]=pos[i]<pos[i+n];
    }
    for(int i=2*n;i<3*n;i++){
        lo[i]=lo[i-2*n];
    }
    for(int i=0;i<n;i++){
        cin >> b[i];
    }
    for(int i=0;i<n;i++){
        cin >> c[i];
    }
    sort(b,b+n);
    sort(c,c+n);
    int l=0,r=1'000'000'000;
    while(l<r){
        int m=(l+r)/2;
        if(check(m))r=m;
        else l=m+1;
    }
    cout << l << "\n";
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 2 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 2 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 2 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 2 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 2 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 2 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 40 ms 592 KB Output is correct
27 Correct 29 ms 592 KB Output is correct
28 Correct 22 ms 696 KB Output is correct
29 Correct 2 ms 336 KB Output is correct
30 Correct 31 ms 592 KB Output is correct
31 Correct 28 ms 592 KB Output is correct
32 Correct 20 ms 592 KB Output is correct
33 Correct 8 ms 336 KB Output is correct
34 Correct 25 ms 592 KB Output is correct
35 Correct 24 ms 760 KB Output is correct
36 Correct 31 ms 776 KB Output is correct
37 Correct 19 ms 696 KB Output is correct
38 Correct 37 ms 592 KB Output is correct
39 Correct 25 ms 592 KB Output is correct
40 Correct 22 ms 592 KB Output is correct

Subtask #4
37.0 / 37.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4366 ms 28832 KB Output is correct
2 Correct 4386 ms 28352 KB Output is correct
3 Correct 3623 ms 30492 KB Output is correct
4 Correct 4227 ms 40420 KB Output is correct
5 Correct 4398 ms 36504 KB Output is correct
6 Correct 145 ms 1672 KB Output is correct
7 Correct 3628 ms 40872 KB Output is correct
8 Correct 3371 ms 35740 KB Output is correct
9 Correct 4080 ms 40380 KB Output is correct
10 Correct 4408 ms 40256 KB Output is correct
11 Correct 4608 ms 40000 KB Output is correct
12 Correct 3993 ms 38104 KB Output is correct
13 Correct 3935 ms 36912 KB Output is correct
14 Correct 3462 ms 40444 KB Output is correct
15 Correct 3358 ms 36888 KB Output is correct
16 Correct 3320 ms 36768 KB Output is correct

Subtask #5
33.0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 2 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 2 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 2 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 40 ms 592 KB Output is correct
27 Correct 29 ms 592 KB Output is correct
28 Correct 22 ms 696 KB Output is correct
29 Correct 2 ms 336 KB Output is correct
30 Correct 31 ms 592 KB Output is correct
31 Correct 28 ms 592 KB Output is correct
32 Correct 20 ms 592 KB Output is correct
33 Correct 8 ms 336 KB Output is correct
34 Correct 25 ms 592 KB Output is correct
35 Correct 24 ms 760 KB Output is correct
36 Correct 31 ms 776 KB Output is correct
37 Correct 19 ms 696 KB Output is correct
38 Correct 37 ms 592 KB Output is correct
39 Correct 25 ms 592 KB Output is correct
40 Correct 22 ms 592 KB Output is correct
41 Correct 4366 ms 28832 KB Output is correct
42 Correct 4386 ms 28352 KB Output is correct
43 Correct 3623 ms 30492 KB Output is correct
44 Correct 4227 ms 40420 KB Output is correct
45 Correct 4398 ms 36504 KB Output is correct
46 Correct 145 ms 1672 KB Output is correct
47 Correct 3628 ms 40872 KB Output is correct
48 Correct 3371 ms 35740 KB Output is correct
49 Correct 4080 ms 40380 KB Output is correct
50 Correct 4408 ms 40256 KB Output is correct
51 Correct 4608 ms 40000 KB Output is correct
52 Correct 3993 ms 38104 KB Output is correct
53 Correct 3935 ms 36912 KB Output is correct
54 Correct 3462 ms 40444 KB Output is correct
55 Correct 3358 ms 36888 KB Output is correct
56 Correct 3320 ms 36768 KB Output is correct
57 Correct 4054 ms 39872 KB Output is correct
58 Correct 4516 ms 36608 KB Output is correct
59 Correct 2950 ms 28656 KB Output is correct
60 Correct 4838 ms 40148 KB Output is correct
61 Correct 4266 ms 36508 KB Output is correct
62 Correct 3362 ms 33128 KB Output is correct
63 Correct 104 ms 1536 KB Output is correct
64 Correct 3649 ms 40728 KB Output is correct
65 Correct 3730 ms 35488 KB Output is correct
66 Correct 4959 ms 40180 KB Output is correct
67 Correct 2975 ms 40340 KB Output is correct
68 Correct 3487 ms 39988 KB Output is correct
69 Correct 2342 ms 27136 KB Output is correct
70 Correct 3524 ms 40236 KB Output is correct
71 Correct 2894 ms 40348 KB Output is correct
72 Correct 3524 ms 40208 KB Output is correct
73 Correct 3536 ms 40092 KB Output is correct
74 Correct 4339 ms 40380 KB Output is correct
75 Correct 3055 ms 27116 KB Output is correct
76 Correct 4770 ms 40280 KB Output is correct
77 Correct 3260 ms 36164 KB Output is correct