oj.uz

Submission #1021054

# Submission time Handle Problem Language Result Execution time Memory
1021054 2024-07-12T13:24:07 Z JakobZorz Werewolf (IOI18_werewolf) C++17
15 / 100
 4000 ms 114332 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]=min(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 min(table[l][lg],table[r-(1<<lg)][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;
            }
        }
        
        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:142:23: warning: 'rr' may be used uninitialized in this function [-Wmaybe-uninitialized]
  142 |             if(rl<i&&i<rr)
      |                      ~^~~
werewolf.cpp:142:18: warning: 'rl' may be used uninitialized in this function [-Wmaybe-uninitialized]
  142 |             if(rl<i&&i<rr)
      |                ~~^~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5212 KB Output is correct
2 Correct 2 ms 5212 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 5124 KB Output is correct
6 Correct 3 ms 5212 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

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5212 KB Output is correct
2 Correct 2 ms 5212 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 5124 KB Output is correct
6 Correct 3 ms 5212 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 209 ms 88280 KB Output is correct
11 Correct 119 ms 49712 KB Output is correct
12 Correct 13 ms 8540 KB Output is correct
13 Correct 108 ms 75300 KB Output is correct
14 Correct 50 ms 69200 KB Output is correct
15 Correct 148 ms 66384 KB Output is correct

Subtask #3
0 / 34.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4029 ms 114332 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 5212 KB Output is correct
2 Correct 2 ms 5212 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 5124 KB Output is correct
6 Correct 3 ms 5212 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 209 ms 88280 KB Output is correct
11 Correct 119 ms 49712 KB Output is correct
12 Correct 13 ms 8540 KB Output is correct
13 Correct 108 ms 75300 KB Output is correct
14 Correct 50 ms 69200 KB Output is correct
15 Correct 148 ms 66384 KB Output is correct
16 Execution timed out 4029 ms 114332 KB Time limit exceeded
17 Halted 0 ms 0 KB -