oj.uz

답안 #1021073

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1021073 2024-07-12T13:39:42 Z JakobZorz 늑대인간 (IOI18_werewolf) C++17
15 / 100
 4000 ms 106016 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 1e9;
        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++){
            comps[i]={i};
            set<int>to_add;
            for(int ne:nodes[i]){
                if(ne>i)
                    continue;
                to_add.insert(comp[ne]);
            }
            for(int j:to_add){
                comps[i].insert(comps[i].end(),comps[j].begin(),comps[j].end());
                comps[i].push_back(i);
            }
            for(int j:comps[i])
                comp[j]=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(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]){
                    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[r].insert(i);
                    for(int i:comps[comp[r]])
                        comp[i]=comp[r];
                }
            }
            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)<=qry->R)
                    l=mid;
                else
                    r=mid;
            }
            //rr=l;
            //cout<<rr<<" "<<r<<" "<<i<<" "<<line.size()<<"\n";
        }
        
        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;
}

Compilation message

werewolf.cpp: In function 'std::vector<int> check_validity(int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
werewolf.cpp:156:23: warning: 'rr' may be used uninitialized in this function [-Wmaybe-uninitialized]
  156 |             if(rl<i&&i<rr)
      |                      ~^~~
werewolf.cpp:156:18: warning: 'rl' may be used uninitialized in this function [-Wmaybe-uninitialized]
  156 |             if(rl<i&&i<rr)
      |                ~~^~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5212 KB Output is correct
2 Correct 2 ms 5144 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4952 KB Output is correct
5 Correct 2 ms 5212 KB Output is correct
6 Correct 3 ms 5328 KB Output is correct
7 Correct 2 ms 5212 KB Output is correct
8 Correct 2 ms 5212 KB Output is correct
9 Correct 2 ms 5212 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5212 KB Output is correct
2 Correct 2 ms 5144 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4952 KB Output is correct
5 Correct 2 ms 5212 KB Output is correct
6 Correct 3 ms 5328 KB Output is correct
7 Correct 2 ms 5212 KB Output is correct
8 Correct 2 ms 5212 KB Output is correct
9 Correct 2 ms 5212 KB Output is correct
10 Correct 223 ms 88400 KB Output is correct
11 Correct 120 ms 49744 KB Output is correct
12 Correct 15 ms 8536 KB Output is correct
13 Correct 109 ms 75424 KB Output is correct
14 Correct 51 ms 69204 KB Output is correct
15 Correct 160 ms 66496 KB Output is correct

Subtask #3
0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 4072 ms 106016 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5212 KB Output is correct
2 Correct 2 ms 5144 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4952 KB Output is correct
5 Correct 2 ms 5212 KB Output is correct
6 Correct 3 ms 5328 KB Output is correct
7 Correct 2 ms 5212 KB Output is correct
8 Correct 2 ms 5212 KB Output is correct
9 Correct 2 ms 5212 KB Output is correct
10 Correct 223 ms 88400 KB Output is correct
11 Correct 120 ms 49744 KB Output is correct
12 Correct 15 ms 8536 KB Output is correct
13 Correct 109 ms 75424 KB Output is correct
14 Correct 51 ms 69204 KB Output is correct
15 Correct 160 ms 66496 KB Output is correct
16 Execution timed out 4072 ms 106016 KB Time limit exceeded
17 Halted 0 ms 0 KB -