oj.uz

답안 #1021046

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1021046 2024-07-12T13:15:41 Z JakobZorz 늑대인간 (IOI18_werewolf) C++17
15 / 100
 4000 ms 93724 KB 
#include"werewolf.h"
#include<queue>
#include<iostream>
#include<set>
#include<algorithm>
using namespace std;

int n,m,q;
vector<int>nodes[200000];

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;
    }
    /*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;
            }
        }
        
        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:110:23: warning: 'rr' may be used uninitialized in this function [-Wmaybe-uninitialized]
  110 |             if(rl<i&&i<rr)
      |                      ~^~~
werewolf.cpp:110:18: warning: 'rl' may be used uninitialized in this function [-Wmaybe-uninitialized]
  110 |             if(rl<i&&i<rr)
      |                ~~^~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5208 KB Output is correct
2 Correct 3 ms 5212 KB Output is correct
3 Correct 2 ms 5088 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 3 ms 5284 KB Output is correct
6 Correct 2 ms 5132 KB Output is correct
7 Correct 3 ms 5212 KB Output is correct
8 Correct 3 ms 4956 KB Output is correct
9 Correct 3 ms 5212 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5208 KB Output is correct
2 Correct 3 ms 5212 KB Output is correct
3 Correct 2 ms 5088 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 3 ms 5284 KB Output is correct
6 Correct 2 ms 5132 KB Output is correct
7 Correct 3 ms 5212 KB Output is correct
8 Correct 3 ms 4956 KB Output is correct
9 Correct 3 ms 5212 KB Output is correct
10 Correct 254 ms 87892 KB Output is correct
11 Correct 135 ms 49236 KB Output is correct
12 Correct 25 ms 8028 KB Output is correct
13 Correct 121 ms 75288 KB Output is correct
14 Correct 70 ms 69204 KB Output is correct
15 Correct 202 ms 65872 KB Output is correct

Subtask #3
0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 4080 ms 93724 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5208 KB Output is correct
2 Correct 3 ms 5212 KB Output is correct
3 Correct 2 ms 5088 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 3 ms 5284 KB Output is correct
6 Correct 2 ms 5132 KB Output is correct
7 Correct 3 ms 5212 KB Output is correct
8 Correct 3 ms 4956 KB Output is correct
9 Correct 3 ms 5212 KB Output is correct
10 Correct 254 ms 87892 KB Output is correct
11 Correct 135 ms 49236 KB Output is correct
12 Correct 25 ms 8028 KB Output is correct
13 Correct 121 ms 75288 KB Output is correct
14 Correct 70 ms 69204 KB Output is correct
15 Correct 202 ms 65872 KB Output is correct
16 Execution timed out 4080 ms 93724 KB Time limit exceeded
17 Halted 0 ms 0 KB -