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Submission #310627

# Submission time Handle Problem Language Result Execution time Memory
310627 2020-10-07T14:07:31 Z vipghn2003 Werewolf (IOI18_werewolf) C++14
100 / 100
 1060 ms 151548 KB 
#include <bits/stdc++.h>

using namespace std;

const int N=4e5+5;
int n,m,q,par[N],sz[N],l[N],st[N],en[N],now[N],nsz[N];
vector<int>adj[N],g[N],event[N];
set<int>node[N];

int Find(int u)
{
    if(par[u]==u) return u;
    return par[u]=Find(par[u]);
}

void Union(int u,int v,bool type)
{
    u=Find(u);
    v=Find(v);
    if(u==v) return;
    if(sz[u]<sz[v]) swap(u,v);
    if(!type) g[u].push_back(v);
    else for(auto&it:node[v]) node[u].insert(it);
    par[v]=u;
    sz[u]+=sz[v];
}

void dfs(int u)
{
    static int nTime=0;
    l[u]=++nTime;
    for(auto &v:g[u]) dfs(v);
}

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=X.size();
    q=S.size();
    vector<int>res(q,0);
    iota(par,par+n,0);
    fill(sz,sz+n,1);
    for(int i=0;i<m;i++)
    {
        adj[X[i]].push_back(Y[i]);
        adj[Y[i]].push_back(X[i]);
    }
    for(int i=0;i<q;i++) event[L[i]].push_back(i);
    for(int i=n-1;i>=0;i--)
    {
        for(auto&e:adj[i]) if(e>i) Union(e,i,0);
        for(auto&id:event[i])
        {
            int u=Find(S[id]);
            now[id]=u;
            nsz[id]=sz[u];
        }
        event[i].clear();
    }
    for(int i=0;i<n;i++)
    {
        if(par[i]==i)
        {
            dfs(i);
            break;
        }
    }
    for(int i=0;i<q;i++)
    {
        st[i]=l[now[i]];
        en[i]=l[now[i]]+nsz[i]-1;
        event[R[i]].push_back(i);
    }
    for(int i=0;i<n;i++) node[i].insert(l[i]);
    iota(par,par+n,0);
    fill(sz,sz+n,1);
    for(int i=0;i<n;i++)
    {
        for(auto&j:adj[i]) if(j<i) Union(i,j,1);
        for(auto&id:event[i])
        {
            int u=Find(E[id]);
            auto it=node[u].lower_bound(st[id]);
            if(it!=node[u].end()&&*(it)<=en[id]) res[id]=1;
        }
    }
    return res;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 47412 KB Output is correct
2 Correct 33 ms 47404 KB Output is correct
3 Correct 35 ms 47352 KB Output is correct
4 Correct 33 ms 47352 KB Output is correct
5 Correct 34 ms 47336 KB Output is correct
6 Correct 35 ms 47360 KB Output is correct
7 Correct 32 ms 47408 KB Output is correct
8 Correct 33 ms 47360 KB Output is correct
9 Correct 33 ms 47360 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 47412 KB Output is correct
2 Correct 33 ms 47404 KB Output is correct
3 Correct 35 ms 47352 KB Output is correct
4 Correct 33 ms 47352 KB Output is correct
5 Correct 34 ms 47336 KB Output is correct
6 Correct 35 ms 47360 KB Output is correct
7 Correct 32 ms 47408 KB Output is correct
8 Correct 33 ms 47360 KB Output is correct
9 Correct 33 ms 47360 KB Output is correct
10 Correct 39 ms 48256 KB Output is correct
11 Correct 40 ms 48352 KB Output is correct
12 Correct 44 ms 48632 KB Output is correct
13 Correct 39 ms 48256 KB Output is correct
14 Correct 40 ms 48120 KB Output is correct
15 Correct 41 ms 48376 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 1060 ms 151460 KB Output is correct
2 Correct 648 ms 108912 KB Output is correct
3 Correct 692 ms 114552 KB Output is correct
4 Correct 829 ms 122680 KB Output is correct
5 Correct 841 ms 124236 KB Output is correct
6 Correct 965 ms 130584 KB Output is correct
7 Correct 990 ms 151548 KB Output is correct
8 Correct 626 ms 108868 KB Output is correct
9 Correct 651 ms 113880 KB Output is correct
10 Correct 773 ms 122488 KB Output is correct
11 Correct 688 ms 123896 KB Output is correct
12 Correct 811 ms 131524 KB Output is correct
13 Correct 630 ms 107544 KB Output is correct
14 Correct 646 ms 107372 KB Output is correct
15 Correct 647 ms 107308 KB Output is correct
16 Correct 649 ms 107408 KB Output is correct
17 Correct 956 ms 150776 KB Output is correct

Subtask #4
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 47412 KB Output is correct
2 Correct 33 ms 47404 KB Output is correct
3 Correct 35 ms 47352 KB Output is correct
4 Correct 33 ms 47352 KB Output is correct
5 Correct 34 ms 47336 KB Output is correct
6 Correct 35 ms 47360 KB Output is correct
7 Correct 32 ms 47408 KB Output is correct
8 Correct 33 ms 47360 KB Output is correct
9 Correct 33 ms 47360 KB Output is correct
10 Correct 39 ms 48256 KB Output is correct
11 Correct 40 ms 48352 KB Output is correct
12 Correct 44 ms 48632 KB Output is correct
13 Correct 39 ms 48256 KB Output is correct
14 Correct 40 ms 48120 KB Output is correct
15 Correct 41 ms 48376 KB Output is correct
16 Correct 1060 ms 151460 KB Output is correct
17 Correct 648 ms 108912 KB Output is correct
18 Correct 692 ms 114552 KB Output is correct
19 Correct 829 ms 122680 KB Output is correct
20 Correct 841 ms 124236 KB Output is correct
21 Correct 965 ms 130584 KB Output is correct
22 Correct 990 ms 151548 KB Output is correct
23 Correct 626 ms 108868 KB Output is correct
24 Correct 651 ms 113880 KB Output is correct
25 Correct 773 ms 122488 KB Output is correct
26 Correct 688 ms 123896 KB Output is correct
27 Correct 811 ms 131524 KB Output is correct
28 Correct 630 ms 107544 KB Output is correct
29 Correct 646 ms 107372 KB Output is correct
30 Correct 647 ms 107308 KB Output is correct
31 Correct 649 ms 107408 KB Output is correct
32 Correct 956 ms 150776 KB Output is correct
33 Correct 933 ms 120568 KB Output is correct
34 Correct 404 ms 83192 KB Output is correct
35 Correct 877 ms 112504 KB Output is correct
36 Correct 934 ms 124100 KB Output is correct
37 Correct 859 ms 113392 KB Output is correct
38 Correct 934 ms 120292 KB Output is correct
39 Correct 887 ms 104520 KB Output is correct
40 Correct 908 ms 119276 KB Output is correct
41 Correct 805 ms 114320 KB Output is correct
42 Correct 855 ms 122872 KB Output is correct
43 Correct 920 ms 113520 KB Output is correct
44 Correct 829 ms 113776 KB Output is correct
45 Correct 790 ms 104312 KB Output is correct
46 Correct 734 ms 104312 KB Output is correct
47 Correct 607 ms 107628 KB Output is correct
48 Correct 609 ms 107384 KB Output is correct
49 Correct 620 ms 107628 KB Output is correct
50 Correct 587 ms 107412 KB Output is correct
51 Correct 862 ms 117632 KB Output is correct
52 Correct 854 ms 117376 KB Output is correct