oj.uz

답안 #359340

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
359340 2021-01-26T22:28:46 Z Rafi22 늑대인간 (IOI18_werewolf) C++14
15 / 100
 540 ms 158444 KB 
#include <bits/stdc++.h>
#include "werewolf.h"

using namespace std;

#define st first
#define nd second
#define pb push_back
#define sz(x) (int)(x).size()
#define ll long long
ll mod=1000000007;
int inf=1000000007;
ll infl=1000000000000000007;
const int N=200007,M=400007,Q=200007;
vector<int> G[N];
vector<int> G1[N];
vector<int> DG[N+M];
int dsu[N];
vector<pair<int,int>>poc[N];
vector<pair<int,int>>kon[N];
int q[Q][2];
pair<int,int>seg[Q][2];

int Find(int v)
{
    if(v==dsu[v]) return v;
    return dsu[v]=Find(dsu[v]);
}
int it;
void Union(int u,int v)
{
   u=Find(u),v=Find(v);
   it++;
   dsu[it]=it;
   dsu[u]=it;
   dsu[v]=it;
   DG[it].pb(u);
   if(v!=u) DG[it].pb(v);
}

int pre[N],post[N],c;
int a1[N],a2[N];

void dfs(int v,bool b)
{
    if(sz(DG[v])==0)
    {
        pre[v]=++c;
        if(b) a2[c]=v;
        else a1[c]=v;
        post[v]=c;
    }
    else
    {
        pre[v]=inf;
        post[v]=0;
    }
    for(auto u:DG[v])
    {
        dfs(u,b);
        pre[v]=min(pre[v],pre[u]);
        post[v]=max(post[v],post[u]);
    }
}
int tree[4*N],pot=1;
vector<pair<pair<int,int>,pair<int,int>>>vec[N];
int que(int v,int a,int b,int l,int r)
{
    if(a<=l&&b>=r) return tree[v];
    if(l>b||r<a) return 0;
    return max(que(2*v,a,b,l,(l+r)/2),que(2*v+1,a,b,(l+r)/2+1,r));
}
void ins(int u,int v)
{
    int y=u+pot-1;
    tree[y]=v;
    while(y>1)
    {
        y/=2;
        tree[y]=max(tree[2*y],tree[2*y+1]);
    }
}


vector<int> check_validity(int n,vector<int> X,vector<int> Y,vector<int>S,vector<int>E,vector<int>L,vector<int>R)
{
    for(int i=0;i<sz(X);i++)
    {
        X[i]++;
        Y[i]++;
        if(X[i]>Y[i])
        {
            G1[X[i]].pb(Y[i]);
            G[Y[i]].pb(X[i]);
        }
        else
        {
            G[X[i]].pb(Y[i]);
            G1[Y[i]].pb(X[i]);
        }
    }
    for(int i=0;i<sz(S);i++)
    {
        S[i]++;
        E[i]++;
        L[i]++;
        R[i]++;
        poc[L[i]].pb({S[i],i});
        kon[R[i]].pb({E[i],i});
    }
    it=n;
    for(int i=1;i<=n;i++) dsu[i]=i;
    for(int i=n;i>0;i--)
    {
        for(auto u:G[i]) Union(i,u);
        for(auto x:poc[i]) q[x.nd][0]=Find(x.st);
    }
    for(int i=1;i<=it;i++) if(Find(i)==i) dfs(i,0);
    for(int i=0;i<sz(S);i++) seg[i][0]={pre[q[i][0]],post[q[i][0]]};
    for(int i=1;i<=it;i++) DG[i].clear();
    it=n,c=0;
    for(int i=1;i<=n;i++) dsu[i]=i;
    for(int i=1;i<=n;i++)
    {
        for(auto u:G1[i]) Union(i,u);
        for(auto x:kon[i]) q[x.nd][1]=Find(x.st);
    }
    for(int i=1;i<=it;i++) if(Find(i)==i) dfs(i,1);
    for(int i=0;i<sz(S);i++) seg[i][1]={pre[q[i][1]],post[q[i][1]]};
    while(pot<n) pot*=2;
    for(int i=0;i<sz(S);i++)
    {
      //  cout<<seg[i][0].st<<" "<<seg[i][0].nd<<" "<<seg[i][1].st<<" "<<seg[i][1].nd<<endl;
        vec[seg[i][0].nd].pb({{seg[i][0].st,i},{seg[i][1].st,seg[i][1].nd}});
    }
    vector<int>ans(sz(S));
    for(int i=1;i<=n;i++)
    {
        ins(pre[a1[i]],i);
        for(auto x:vec[i])
        {
            //cout<<x.st.nd<<" "<<que(1,x.nd.st,x.nd.nd,1,pot)<<endl;
            if(que(1,x.nd.st,x.nd.nd,1,pot)>=x.st.st&&S[x.st.nd]>=L[x.st.nd]&&E[x.st.nd]<=R[x.st.nd]) ans[x.st.nd]=1;
        }
    }
    return ans;
}

/*int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int nn,mm,qq;
    cin>>nn>>mm>>qq;
    vector<int> xx(mm),yy(mm);
    for(int i=0;i<mm;i++) cin>>xx[i];
    for(int i=0;i<mm;i++) cin>>yy[i];
    vector<int> ss(qq),ee(qq),LL(qq),rr(qq);
    for(int i=0;i<qq;i++) cin>>ss[i];
    for(int i=0;i<qq;i++) cin>>ee[i];
    for(int i=0;i<qq;i++) cin>>LL[i];
    for(int i=0;i<qq;i++) cin>>rr[i];
    vector<int> veccc=check_validity(nn,xx,yy,ss,ee,LL,rr);
    for(auto x:veccc) cout<<x<<' ';

    return 0;
}*/

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 26 ms 37996 KB Output is correct
2 Correct 26 ms 37996 KB Output is correct
3 Correct 26 ms 37996 KB Output is correct
4 Correct 27 ms 37996 KB Output is correct
5 Correct 26 ms 38124 KB Output is correct
6 Correct 26 ms 37996 KB Output is correct
7 Correct 27 ms 37996 KB Output is correct
8 Correct 26 ms 37996 KB Output is correct
9 Correct 27 ms 37996 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 26 ms 37996 KB Output is correct
2 Correct 26 ms 37996 KB Output is correct
3 Correct 26 ms 37996 KB Output is correct
4 Correct 27 ms 37996 KB Output is correct
5 Correct 26 ms 38124 KB Output is correct
6 Correct 26 ms 37996 KB Output is correct
7 Correct 27 ms 37996 KB Output is correct
8 Correct 26 ms 37996 KB Output is correct
9 Correct 27 ms 37996 KB Output is correct
10 Correct 33 ms 39020 KB Output is correct
11 Correct 32 ms 38892 KB Output is correct
12 Correct 33 ms 39040 KB Output is correct
13 Correct 33 ms 39148 KB Output is correct
14 Correct 32 ms 39148 KB Output is correct
15 Correct 34 ms 39148 KB Output is correct

Subtask #3
0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 540 ms 158444 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 26 ms 37996 KB Output is correct
2 Correct 26 ms 37996 KB Output is correct
3 Correct 26 ms 37996 KB Output is correct
4 Correct 27 ms 37996 KB Output is correct
5 Correct 26 ms 38124 KB Output is correct
6 Correct 26 ms 37996 KB Output is correct
7 Correct 27 ms 37996 KB Output is correct
8 Correct 26 ms 37996 KB Output is correct
9 Correct 27 ms 37996 KB Output is correct
10 Correct 33 ms 39020 KB Output is correct
11 Correct 32 ms 38892 KB Output is correct
12 Correct 33 ms 39040 KB Output is correct
13 Correct 33 ms 39148 KB Output is correct
14 Correct 32 ms 39148 KB Output is correct
15 Correct 34 ms 39148 KB Output is correct
16 Runtime error 540 ms 158444 KB Execution killed with signal 11
17 Halted 0 ms 0 KB -