oj.uz

답안 #1021586

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1021586 2024-07-12T20:30:47 Z JakobZorz 늑대인간 (IOI18_werewolf) C++17
100 / 100
 868 ms 186392 KB 
#include"werewolf.h"
#include<queue>
#include<iostream>
#include<set>
#include<algorithm>
using namespace std;
 
int n,m,q;
vector<int>nodes[200000];
 
struct RMQ{
    vector<vector<int>>table;
    vector<int>lg2;
    int n;
    RMQ(vector<int>arr){
        n=(int)arr.size();
        table=vector<vector<int>>(20,vector<int>(n));
        int curr=1;
        lg2=vector<int>(n+1);
        for(int i=2;i<=n;i++){
            while((1<<curr)<=i)
                curr++;
            lg2[i]=curr-1;
        }
        table[0]=arr;
        for(int p=1;p<20;p++){
            for(int i=0;i+(1<<p)<=n;i++){
                table[p][i]=max(table[p-1][i],table[p-1][i+(1<<(p-1))]);
            }
        }
    }
    
    int get(int l,int r){
        if(l==r)
            return 0;
        int lg=lg2[r-l];
        return max(table[lg][l],table[lg][r-(1<<lg)]);
    }
};
 
struct Query{
    int S,E,L,R;
    int ans;
};
 
bool cmp(Query*a,Query*b){
    return a->L>b->L;
}
 
vector<int>check_validity(int N,vector<int>X,vector<int>Y,vector<int>S,vector<int>E,vector<int>L,vector<int>R){
    n=N;
    m=(int)X.size();
    q=(int)S.size();
    for(int i=0;i<n;i++){
        nodes[i].clear();
    }
    for(int i=0;i<m;i++){
        nodes[X[i]].push_back(Y[i]);
        nodes[Y[i]].push_back(X[i]);
    }
    
    vector<int>line;
    {
        vector<int>comp(n);
        vector<vector<int>>comps(n);
        
        for(int i=0;i<n;i++){
            set<int>to_add;
            int curr_comp=i;
            comp[i]=i;
            comps[curr_comp].push_back(i);
            for(int ne:nodes[i]){
                if(ne>i)
                    continue;
                to_add.insert(comp[ne]);
            }
            for(int j:to_add){
                if(comps[curr_comp].size()<comps[j].size()){
                    swap(curr_comp,j);
                }
                comps[curr_comp].push_back(i);
                comp[i]=curr_comp;
                comps[curr_comp].insert(comps[curr_comp].end(),comps[j].begin(),comps[j].end());
                for(int k:comps[j])
                    comp[k]=curr_comp;
            }
            comps[curr_comp].push_back(i);
        }
        line=comps[comp[0]];
    }
    vector<int>to_line(n);
    for(int i=0;i<(int)line.size();i++){
        to_line[line[i]]=i;
    }
    
    RMQ rmq=RMQ(line);
    /*for(int i:line)
        cout<<i<<" ";
    cout<<"\n";*/
    
    vector<Query*>qrs(q);
    
    for(int i=0;i<q;i++){
        qrs[i]=new Query;
        qrs[i]->S=S[i];
        qrs[i]->E=E[i];
        qrs[i]->L=L[i];
        qrs[i]->R=R[i];
        qrs[i]->ans=0;
    }
    
    vector<Query*>srt=qrs;
    sort(srt.begin(),srt.end(),cmp);
    
    vector<int>comp(n);
    vector<vector<int>>comps(n);
    vector<set<int>>comps_line(n);
    
    int r=n-1;
    for(auto qry:srt){
        while(r>=qry->L){
            comp[r]=r;
            comps[r]={r};
            comps_line[r].insert(to_line[r]);
            for(int ne:nodes[r]){
                if(ne<r)
                    continue;
                if(comp[ne]!=comp[r]){
                    int br=r;
                    if(comps[comp[r]].size()<comps[comp[ne]].size())
                        swap(ne,r);
                    comps[comp[r]].insert(comps[comp[r]].end(),comps[comp[ne]].begin(),comps[comp[ne]].end());
                    for(int i:comps_line[comp[ne]])
                        comps_line[comp[r]].insert(i);
                    for(int i:comps[comp[ne]])
                        comp[i]=comp[r];
                    r=br;
                }
            }
            r--;
        }
        
        int rl,rr;
        /*for(int j=0;j<(int)line.size();j++){
            if(line[j]==qry->E){
                //for(rr=j;rr<(int)line.size()&&line[rr]<=qry->R;rr++);
                //for(rl=j;rl>=0&&line[rl]<=qry->R;rl--);
                break;
            }
        }*/
        
        {
            int i=to_line[qry->E];
            int l=i,r=(int)line.size();
            while(l<r-1){
                int mid=(l+r)/2;
                if(rmq.get(i,mid+1)<=qry->R)
                    l=mid;
                else
                    r=mid;
            }
            rr=r;
        }
        
        {
            int i=to_line[qry->E];
            int l=0,r=i;
            while(l<r-1){
                int mid=(l+r)/2;
                if(rmq.get(mid,i)<=qry->R)
                    r=mid;
                else
                    l=mid;
            }
            rl=l;
        }
        
        auto iter=comps_line[comp[qry->S]].lower_bound(rl+1);
        if(iter!=comps_line[comp[qry->S]].end()&&*iter<rr)
            qry->ans=1;
        
        /*for(int i:comps_line[comp[qry->S]]){
            if(rl<i&&i<rr)
                qry->ans=1;
        }*/
    }
    
    vector<int>res(q);
    for(int i=0;i<q;i++)
        res[i]=qrs[i]->ans;
    return res;
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 2 ms 4932 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 3 ms 4956 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 3 ms 4956 KB Output is correct
8 Correct 2 ms 5208 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 2 ms 4932 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 3 ms 4956 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 3 ms 4956 KB Output is correct
8 Correct 2 ms 5208 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 8 ms 7004 KB Output is correct
11 Correct 10 ms 7256 KB Output is correct
12 Correct 10 ms 7512 KB Output is correct
13 Correct 10 ms 7116 KB Output is correct
14 Correct 8 ms 7260 KB Output is correct
15 Correct 8 ms 7260 KB Output is correct

Subtask #3
34.0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Correct 868 ms 183352 KB Output is correct
2 Correct 563 ms 145152 KB Output is correct
3 Correct 616 ms 157380 KB Output is correct
4 Correct 727 ms 174364 KB Output is correct
5 Correct 721 ms 177408 KB Output is correct
6 Correct 832 ms 182568 KB Output is correct
7 Correct 816 ms 186392 KB Output is correct
8 Correct 537 ms 145036 KB Output is correct
9 Correct 527 ms 157428 KB Output is correct
10 Correct 547 ms 174060 KB Output is correct
11 Correct 598 ms 175444 KB Output is correct
12 Correct 651 ms 182600 KB Output is correct
13 Correct 565 ms 137580 KB Output is correct
14 Correct 566 ms 137576 KB Output is correct
15 Correct 573 ms 137860 KB Output is correct
16 Correct 557 ms 137572 KB Output is correct
17 Correct 819 ms 184020 KB Output is correct

Subtask #4
51.0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 2 ms 4932 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 3 ms 4956 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 3 ms 4956 KB Output is correct
8 Correct 2 ms 5208 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 8 ms 7004 KB Output is correct
11 Correct 10 ms 7256 KB Output is correct
12 Correct 10 ms 7512 KB Output is correct
13 Correct 10 ms 7116 KB Output is correct
14 Correct 8 ms 7260 KB Output is correct
15 Correct 8 ms 7260 KB Output is correct
16 Correct 868 ms 183352 KB Output is correct
17 Correct 563 ms 145152 KB Output is correct
18 Correct 616 ms 157380 KB Output is correct
19 Correct 727 ms 174364 KB Output is correct
20 Correct 721 ms 177408 KB Output is correct
21 Correct 832 ms 182568 KB Output is correct
22 Correct 816 ms 186392 KB Output is correct
23 Correct 537 ms 145036 KB Output is correct
24 Correct 527 ms 157428 KB Output is correct
25 Correct 547 ms 174060 KB Output is correct
26 Correct 598 ms 175444 KB Output is correct
27 Correct 651 ms 182600 KB Output is correct
28 Correct 565 ms 137580 KB Output is correct
29 Correct 566 ms 137576 KB Output is correct
30 Correct 573 ms 137860 KB Output is correct
31 Correct 557 ms 137572 KB Output is correct
32 Correct 819 ms 184020 KB Output is correct
33 Correct 803 ms 151396 KB Output is correct
34 Correct 206 ms 45652 KB Output is correct
35 Correct 745 ms 141732 KB Output is correct
36 Correct 802 ms 153180 KB Output is correct
37 Correct 781 ms 142732 KB Output is correct
38 Correct 795 ms 150556 KB Output is correct
39 Correct 767 ms 158908 KB Output is correct
40 Correct 709 ms 150740 KB Output is correct
41 Correct 571 ms 143520 KB Output is correct
42 Correct 637 ms 153660 KB Output is correct
43 Correct 663 ms 142656 KB Output is correct
44 Correct 642 ms 142656 KB Output is correct
45 Correct 609 ms 150056 KB Output is correct
46 Correct 601 ms 160292 KB Output is correct
47 Correct 550 ms 137776 KB Output is correct
48 Correct 566 ms 137576 KB Output is correct
49 Correct 556 ms 137580 KB Output is correct
50 Correct 585 ms 137420 KB Output is correct
51 Correct 657 ms 150852 KB Output is correct
52 Correct 679 ms 150712 KB Output is correct