oj.uz

Submission #1021044

# Submission time Handle Problem Language Result Execution time Memory
1021044 2024-07-12T13:13:07 Z JakobZorz Werewolf (IOI18_werewolf) C++17
15 / 100
 4000 ms 94108 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<vector<int>>comps_line(n);
    
    int r=n-1;
    for(auto qry:srt){
        while(r>=qry->L){
            comp[r]=r;
            comps[r]={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[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[comp[qry->S]]){
            if(rl<to_line[i]&&to_line[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:108:29: warning: 'rr' may be used uninitialized in this function [-Wmaybe-uninitialized]
  108 |             if(rl<to_line[i]&&to_line[i]<rr)
      |                ~~~~~~~~~~~~~^~~~~~~~~~~~~~~
werewolf.cpp:108:29: warning: 'rl' may be used uninitialized in this function [-Wmaybe-uninitialized]

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5208 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 3 ms 4956 KB Output is correct
5 Correct 2 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 3 ms 5072 KB Output is correct
9 Correct 3 ms 5212 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5208 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 3 ms 4956 KB Output is correct
5 Correct 2 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 3 ms 5072 KB Output is correct
9 Correct 3 ms 5212 KB Output is correct
10 Correct 42 ms 32856 KB Output is correct
11 Correct 33 ms 22352 KB Output is correct
12 Correct 13 ms 6236 KB Output is correct
13 Correct 51 ms 69592 KB Output is correct
14 Correct 78 ms 69204 KB Output is correct
15 Correct 25 ms 23384 KB Output is correct

Subtask #3
0 / 34.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4046 ms 94108 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5208 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 3 ms 4956 KB Output is correct
5 Correct 2 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 3 ms 5072 KB Output is correct
9 Correct 3 ms 5212 KB Output is correct
10 Correct 42 ms 32856 KB Output is correct
11 Correct 33 ms 22352 KB Output is correct
12 Correct 13 ms 6236 KB Output is correct
13 Correct 51 ms 69592 KB Output is correct
14 Correct 78 ms 69204 KB Output is correct
15 Correct 25 ms 23384 KB Output is correct
16 Execution timed out 4046 ms 94108 KB Time limit exceeded
17 Halted 0 ms 0 KB -