oj.uz

답안 #906066

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
906066 2024-01-13T13:19:34 Z ThylOne Passport (JOI23_passport) C++14
100 / 100
 1268 ms 84160 KB 
//####################
//PassportJOI
//####################
#include<bits/stdc++.h>

using namespace std;
using vi = vector<int>;
struct segtree{
    struct inter{
        int deb,fin;
        bool inclus_dans(inter I){
            return I.deb<=deb && fin<=I.fin;
        }
        bool exclus_de(inter I){
            return fin<I.deb || I.fin<deb;
        }
        inter gauche(){
            int mid = (deb+fin)/2;
            if(mid==fin)mid=deb;
            return {deb,mid};
        }
        inter droite(){
            int mid = (deb+fin)/2;
            if(mid==fin)mid=deb;
            return {mid+1,fin};
        }
    };
    vector<vi> nodes;
    int leaf;
    int nb_nums;
    segtree(int n){
        nb_nums=n;
        leaf = (1<<((int)ceil(log2(n))));
        nodes.resize(leaf*2);
    }
    void addVal(int node,inter act,inter request,int val){
        if(act.inclus_dans(request)){
            nodes[node].push_back(val);
        }else if(act.exclus_de(request)){
            return ;
        }else if(node<leaf){
            addVal(node*2,act.gauche(),request,val);
            addVal(node*2+1,act.droite(),request,val);
        }
    }
    void getNext(int node,inter act,int u,vector<int> &acc){
        if(!(act.deb<=u && u<=act.fin)){
            return;
        }
        for(int &v:nodes[node]){
            acc.push_back(v);
        }
        nodes[node].clear();
        nodes[node].shrink_to_fit();
        if(node<leaf){
            getNext(node*2,act.gauche(),u,acc);
            getNext(node*2+1,act.droite(),u,acc);
        }
    }
};
vector<pair<int,int>> passports;
vector<int> distN;
vector<int> dist1;
int n,q;
void bfs(int source,vector<int> &distances_bfs){
    fill(distances_bfs.begin(),distances_bfs.end(),-1);
    vi distances[n+1];
    distances[0].push_back(source);
    bool mem[n];
    fill(mem,mem+n,false);
    segtree st(n);
    for(int i = 0;i<n;i++){
        st.addVal(1,{0,st.leaf-1},{passports[i].first,passports[i].second},i);
    }
    //BFS
    for(int i = 0;i<=n;i++){
        for(int act:distances[i]){
            if(mem[act])continue;
            distances_bfs[act]=i;
            mem[act]=true;
            vi fils;
            st.getNext(1,{0,st.leaf-1},act,fils);
            for(int &f:fils){
                if(!mem[f]){
                    distances[i+1].push_back(f);
                }
            }
        }
    }
}
void bfs2(vector<int> &distances_bfs){
    fill(distances_bfs.begin(),distances_bfs.end(),-1);
    vi distances[5*n];
    bool mem[n];
    fill(mem,mem+n,false);
    segtree st(n);
    for(int i = 0;i<n;i++){
        st.addVal(1,{0,st.leaf-1},{passports[i].first,passports[i].second},i);
    }
    for(int i = 0;i<n;i++){
        if(dist1[i]==-1 || distN[i]==-1)continue;
        int d = dist1[i]+distN[i]-1;
        if(i==0 || i==n-1)d++;
        distances[d].push_back(i);
    }
    //BFS
    for(int i = 0;i<=5*n-1;i++){
        for(int act:distances[i]){
            if(mem[act])continue;
            distances_bfs[act]=i;
            mem[act]=true;
            vi fils;
            st.getNext(1,{0,st.leaf-1},act,fils);
            for(int &f:fils){
                if(!mem[f]){
                    distances[i+1].push_back(f);
                }
            }
        }
    }
}
signed main(){
    cin>>n;
    for(int i=0;i<n;i++){
        int a,b;cin>>a>>b;
        a--;
        b--;
        passports.push_back({a,b});
    }
    distN.resize(n);
    dist1.resize(n);
   
    bfs(n-1,distN);
    bfs(0,dist1);
    vi ans(n);
    bfs2(ans);
    int q;cin>>q;
    for(int i = 0;i<q;i++){
        int query;cin>>query;
        query--;
        cout<<ans[query]<<'\n';
    }
    return 0;
};

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1139 ms 78068 KB Output is correct
5 Correct 526 ms 53344 KB Output is correct
6 Correct 382 ms 51360 KB Output is correct
7 Correct 276 ms 52928 KB Output is correct
8 Correct 200 ms 47312 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 2 ms 348 KB Output is correct
14 Correct 2 ms 432 KB Output is correct
15 Correct 1 ms 348 KB Output is correct

Subtask #3
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 2 ms 348 KB Output is correct
14 Correct 2 ms 432 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 6 ms 1176 KB Output is correct
17 Correct 6 ms 1176 KB Output is correct
18 Correct 6 ms 1176 KB Output is correct
19 Correct 6 ms 1176 KB Output is correct
20 Correct 4 ms 1016 KB Output is correct
21 Correct 5 ms 1176 KB Output is correct
22 Correct 3 ms 920 KB Output is correct
23 Correct 5 ms 1176 KB Output is correct
24 Correct 4 ms 920 KB Output is correct

Subtask #4
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 2 ms 348 KB Output is correct
14 Correct 2 ms 432 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 6 ms 1176 KB Output is correct
17 Correct 6 ms 1176 KB Output is correct
18 Correct 6 ms 1176 KB Output is correct
19 Correct 6 ms 1176 KB Output is correct
20 Correct 4 ms 1016 KB Output is correct
21 Correct 5 ms 1176 KB Output is correct
22 Correct 3 ms 920 KB Output is correct
23 Correct 5 ms 1176 KB Output is correct
24 Correct 4 ms 920 KB Output is correct
25 Correct 1 ms 480 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 10 ms 1176 KB Output is correct
28 Correct 10 ms 1176 KB Output is correct
29 Correct 9 ms 1176 KB Output is correct
30 Correct 8 ms 1176 KB Output is correct
31 Correct 8 ms 1176 KB Output is correct

Subtask #5
46.0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1139 ms 78068 KB Output is correct
5 Correct 526 ms 53344 KB Output is correct
6 Correct 382 ms 51360 KB Output is correct
7 Correct 276 ms 52928 KB Output is correct
8 Correct 200 ms 47312 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 2 ms 348 KB Output is correct
22 Correct 2 ms 432 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 6 ms 1176 KB Output is correct
25 Correct 6 ms 1176 KB Output is correct
26 Correct 6 ms 1176 KB Output is correct
27 Correct 6 ms 1176 KB Output is correct
28 Correct 4 ms 1016 KB Output is correct
29 Correct 5 ms 1176 KB Output is correct
30 Correct 3 ms 920 KB Output is correct
31 Correct 5 ms 1176 KB Output is correct
32 Correct 4 ms 920 KB Output is correct
33 Correct 1 ms 480 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 10 ms 1176 KB Output is correct
36 Correct 10 ms 1176 KB Output is correct
37 Correct 9 ms 1176 KB Output is correct
38 Correct 8 ms 1176 KB Output is correct
39 Correct 8 ms 1176 KB Output is correct
40 Correct 1268 ms 84160 KB Output is correct
41 Correct 792 ms 58644 KB Output is correct
42 Correct 911 ms 68376 KB Output is correct
43 Correct 941 ms 74808 KB Output is correct
44 Correct 655 ms 56484 KB Output is correct
45 Correct 703 ms 60408 KB Output is correct
46 Correct 266 ms 25532 KB Output is correct
47 Correct 758 ms 65700 KB Output is correct
48 Correct 812 ms 60428 KB Output is correct