oj.uz

답안 #915768

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
915768 2024-01-24T16:44:29 Z bachhoangxuan Golf (JOI17_golf) C++17
100 / 100
 3362 ms 354500 KB 
// Judges with GCC >= 12 only needs Ofast
// #pragma GCC optimize("O3,no-stack-protector,fast-math,unroll-loops,tree-vectorize")
// MLE optimization
// #pragma GCC optimize("conserve-stack")
// Old judges
// #pragma GCC target("sse4.2,popcnt,lzcnt,abm,mmx,fma,bmi,bmi2")
// New judges. Test with assert(__builtin_cpu_supports("avx2"));
// #pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma,tune=native")
// Atcoder
// #pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma")
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
- insert(x),erase(x)
- find_by_order(k): return iterator to the k-th smallest element
- order_of_key(x): the number of elements that are strictly smaller
*/

#include<bits/stdc++.h>
using namespace std;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
uniform_real_distribution<> pp(0.0,1.0);
#define ld long double
#define pii pair<int,int>
#define piii pair<int,pii>
#define mpp make_pair
#define fi first
#define se second
//const int inf=1e18;
const int mod=998244353;
const int maxn=200005;
const int bl=650;
const int maxs=655;
const int maxm=200005;
const int maxq=1000005;
const int maxl=25;
const int maxa=1000000;
const int root=3;
const int base=131;

struct Rec{
    int x,y,u,v;
}rec[maxn];

int sx,sy,tx,ty,n;
vector<int> cx,cy;

vector<piii> cur;
queue<pair<Rec,int>> q;

struct Segtree{
    set<piii> ss[4*maxn];
    void update(int l,int r,int id,int tl,int tr,int x){
        if(tr<l || r<tl) return;
        if(tl<=l && r<=tr){
            if(x<0) ss[id].erase({-x,{tl,tr}});
            else ss[id].insert({x,{tl,tr}});
            return;
        }
        int mid=(l+r)>>1;
        update(l,mid,id<<1,tl,tr,x);update(mid+1,r,id<<1|1,tl,tr,x);
    }
    void query(int l,int r,int id,int p,int tl,int tr){
        auto it=ss[id].lower_bound(mpp(tl,mpp(0,0)));
        while(it!=ss[id].end() && it->fi<=tr){
            cur.push_back(*it);
            it=ss[id].erase(it);
        }
        if(l==r) return;
        int mid=(l+r)>>1;
        if(p<=mid) query(l,mid,id<<1,p,tl,tr);
        else query(mid+1,r,id<<1|1,p,tl,tr);
    }
}Tx,Ty;

vector<pii> p[maxn];

void solve(){
    cin >> sx >> sy >> tx >> ty;
    cx.push_back(sx);cx.push_back(tx);
    cy.push_back(sy);cy.push_back(ty);
    cin >> n;
    for(int i=1;i<=n;i++){
        cin >> rec[i].x >> rec[i].u >> rec[i].y >> rec[i].v;
        cx.push_back(rec[i].x);cx.push_back(rec[i].u);
        cy.push_back(rec[i].y);cy.push_back(rec[i].v);
    }
    sort(cx.begin(),cx.end());
    cx.erase(unique(cx.begin(),cx.end()),cx.end());
    sort(cy.begin(),cy.end());
    cy.erase(unique(cy.begin(),cy.end()),cy.end());


    auto get = [&](vector<int> &c,int x){
        return lower_bound(c.begin(),c.end(),x)-c.begin()+1;
    };

    sx=get(cx,sx);tx=get(cx,tx);
    sy=get(cy,sy);ty=get(cy,ty);
    //cout << sx << ' ' << sy << '\n';
    //cout << tx << ' ' << ty << '\n';
    for(int i=1;i<=n;i++){
        rec[i].x=get(cx,rec[i].x);
        rec[i].y=get(cy,rec[i].y);
        rec[i].u=get(cx,rec[i].u);
        rec[i].v=get(cy,rec[i].v);
        //cout << rec[i].x << ' ' << rec[i].y << ' ' << rec[i].u << ' ' << rec[i].v << '\n';
    }
    //cout << '\n';
    {
        p[sx].push_back({sy,0});
        p[tx].push_back({ty,0});
        for(int i=1;i<=n;i++){
            auto [x,y,u,v]=rec[i];
            p[x].push_back({y,0});
            p[u].push_back({y,0});

            p[x+1].push_back({y,i});
            p[u].push_back({y,-i});
            p[x+1].push_back({v,i});
            p[u].push_back({v,-i});
        }

        set<pii> s;
        for(int i=1;i<=(int)cx.size();i++){
            for(auto [y,id]:p[i]){
                if(!id) continue;
                if(id>0) s.insert({y,id});
                else s.erase({y,-id});
            }
            for(auto [y,id]:p[i]){
                if(id) continue;
                int l=1,r=(int)cy.size();
                auto it=s.lower_bound(mpp(y,0));
                if(it!=s.end()) r=it->fi;
                if(it!=s.begin()){
                    it--;
                    l=it->fi;
                }
                //cout << i << ' ' << l << ' ' << i <<  ' ' << r << '\n';
                if(i==sx && l<=sy && sy<=r) q.push({{i,l,i,r},1});
                else Ty.update(1,(int)cy.size(),1,l,r,i);
            }
        }
    }

    {
        for(int i=1;i<=(int)cy.size();i++) p[i].clear();
        p[sy].push_back({sx,0});
        p[ty].push_back({tx,0});
        for(int i=1;i<=n;i++){
            auto [x,y,u,v]=rec[i];
            p[y].push_back({x,0});
            p[v].push_back({x,0});

            p[y+1].push_back({x,i});
            p[v].push_back({x,-i});
            p[y+1].push_back({u,i});
            p[v].push_back({u,-i});
        }

        set<pii> s;
        for(int i=1;i<=(int)cy.size();i++){
            for(auto [x,id]:p[i]){
                if(!id) continue;
                if(id>0) s.insert({x,id});
                else s.erase({x,-id});
            }
            for(auto [x,id]:p[i]){
                if(id) continue;
                int l=1,r=(int)cx.size();
                auto it=s.lower_bound(mpp(x,0));
                if(it!=s.end()) r=it->fi;
                if(it!=s.begin()){
                    it--;
                    l=it->fi;
                }
                //cout << l << ' ' << i << ' ' << r <<  ' ' << i << '\n';
                if(l<=sx && sx<=r && i==sy) q.push({{l,i,r,i},1});
                else Tx.update(1,(int)cx.size(),1,l,r,i);
            }
        }
    }

    while(!q.empty()){
        auto [c,d]=q.front();q.pop();
        //cout << "* " << c.x << ' ' << c.y << ' ' << c.u << ' ' << c.v << ' ' << d << '\n';
        if(c.x<=tx && c.y<=ty && tx<=c.u && ty<=c.v){
            cout << d << '\n';
            return;
        }
        cur.clear();
        if(c.x==c.u){
            Tx.query(1,(int)cx.size(),1,c.x,c.y,c.v);
            for(auto cc:cur){
                Tx.update(1,(int)cx.size(),1,cc.se.fi,cc.se.se,-cc.fi);
                q.push({{cc.se.fi,cc.fi,cc.se.se,cc.fi},d+1});
            }
        }
        else{
            Ty.query(1,(int)cy.size(),1,c.y,c.x,c.u);
            for(auto cc:cur){
                Ty.update(1,(int)cy.size(),1,cc.se.fi,cc.se.se,-cc.fi);
                q.push({{cc.fi,cc.se.fi,cc.fi,cc.se.se},d+1});
            }
        }
    }
    cout << -1 << '\n';
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);cout.tie(NULL);
    int test=1;//cin >> test;
    while(test--) solve();
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 80472 KB Output is correct
2 Correct 21 ms 80420 KB Output is correct
3 Correct 25 ms 80476 KB Output is correct
4 Correct 22 ms 80724 KB Output is correct
5 Correct 28 ms 81744 KB Output is correct
6 Correct 35 ms 81756 KB Output is correct
7 Correct 28 ms 81680 KB Output is correct
8 Correct 29 ms 81748 KB Output is correct
9 Correct 28 ms 81756 KB Output is correct
10 Correct 28 ms 81756 KB Output is correct
11 Correct 29 ms 81740 KB Output is correct
12 Correct 30 ms 81752 KB Output is correct
13 Correct 29 ms 81876 KB Output is correct
14 Correct 28 ms 81756 KB Output is correct
15 Correct 25 ms 80988 KB Output is correct
16 Correct 26 ms 81496 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 80472 KB Output is correct
2 Correct 21 ms 80420 KB Output is correct
3 Correct 25 ms 80476 KB Output is correct
4 Correct 22 ms 80724 KB Output is correct
5 Correct 28 ms 81744 KB Output is correct
6 Correct 35 ms 81756 KB Output is correct
7 Correct 28 ms 81680 KB Output is correct
8 Correct 29 ms 81748 KB Output is correct
9 Correct 28 ms 81756 KB Output is correct
10 Correct 28 ms 81756 KB Output is correct
11 Correct 29 ms 81740 KB Output is correct
12 Correct 30 ms 81752 KB Output is correct
13 Correct 29 ms 81876 KB Output is correct
14 Correct 28 ms 81756 KB Output is correct
15 Correct 25 ms 80988 KB Output is correct
16 Correct 26 ms 81496 KB Output is correct
17 Correct 29 ms 82260 KB Output is correct
18 Correct 30 ms 82244 KB Output is correct
19 Correct 30 ms 82268 KB Output is correct
20 Correct 30 ms 82456 KB Output is correct
21 Correct 33 ms 82472 KB Output is correct
22 Correct 30 ms 82456 KB Output is correct
23 Correct 29 ms 82268 KB Output is correct
24 Correct 29 ms 82256 KB Output is correct
25 Correct 29 ms 82436 KB Output is correct
26 Correct 30 ms 82268 KB Output is correct
27 Correct 24 ms 81244 KB Output is correct
28 Correct 26 ms 81620 KB Output is correct
29 Correct 26 ms 81756 KB Output is correct

Subtask #3
70.0 / 70.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 80472 KB Output is correct
2 Correct 21 ms 80420 KB Output is correct
3 Correct 25 ms 80476 KB Output is correct
4 Correct 22 ms 80724 KB Output is correct
5 Correct 28 ms 81744 KB Output is correct
6 Correct 35 ms 81756 KB Output is correct
7 Correct 28 ms 81680 KB Output is correct
8 Correct 29 ms 81748 KB Output is correct
9 Correct 28 ms 81756 KB Output is correct
10 Correct 28 ms 81756 KB Output is correct
11 Correct 29 ms 81740 KB Output is correct
12 Correct 30 ms 81752 KB Output is correct
13 Correct 29 ms 81876 KB Output is correct
14 Correct 28 ms 81756 KB Output is correct
15 Correct 25 ms 80988 KB Output is correct
16 Correct 26 ms 81496 KB Output is correct
17 Correct 29 ms 82260 KB Output is correct
18 Correct 30 ms 82244 KB Output is correct
19 Correct 30 ms 82268 KB Output is correct
20 Correct 30 ms 82456 KB Output is correct
21 Correct 33 ms 82472 KB Output is correct
22 Correct 30 ms 82456 KB Output is correct
23 Correct 29 ms 82268 KB Output is correct
24 Correct 29 ms 82256 KB Output is correct
25 Correct 29 ms 82436 KB Output is correct
26 Correct 30 ms 82268 KB Output is correct
27 Correct 24 ms 81244 KB Output is correct
28 Correct 26 ms 81620 KB Output is correct
29 Correct 26 ms 81756 KB Output is correct
30 Correct 2829 ms 347148 KB Output is correct
31 Correct 2892 ms 347644 KB Output is correct
32 Correct 3174 ms 346564 KB Output is correct
33 Correct 3362 ms 348416 KB Output is correct
34 Correct 2963 ms 354500 KB Output is correct
35 Correct 3146 ms 352976 KB Output is correct
36 Correct 2824 ms 351072 KB Output is correct
37 Correct 2922 ms 348280 KB Output is correct
38 Correct 2929 ms 353052 KB Output is correct
39 Correct 2875 ms 348420 KB Output is correct
40 Correct 335 ms 127420 KB Output is correct
41 Correct 313 ms 126656 KB Output is correct
42 Correct 357 ms 127272 KB Output is correct
43 Correct 323 ms 125728 KB Output is correct
44 Correct 325 ms 126908 KB Output is correct
45 Correct 325 ms 127804 KB Output is correct
46 Correct 352 ms 128500 KB Output is correct
47 Correct 325 ms 126144 KB Output is correct
48 Correct 350 ms 127868 KB Output is correct
49 Correct 379 ms 129724 KB Output is correct
50 Correct 26 ms 81748 KB Output is correct
51 Correct 25 ms 81748 KB Output is correct
52 Correct 26 ms 81724 KB Output is correct