oj.uz

Submission #299610

# Submission time Handle Problem Language Result Execution time Memory
299610 2020-09-15T10:33:48 Z kshitij_sodani Werewolf (IOI18_werewolf) C++14
100 / 100
 1195 ms 141540 KB 
#include <bits/stdc++.h>
using namespace std;
#define a first
#define b second
#define pb push_back
typedef long long llo;


#include "werewolf.h"
vector<pair<int,int>> pre[200001];
vector<pair<int,int>> pre2[200001];
vector<pair<int,int>> pre3[200001];
vector<pair<int,int>> pre4[200001];

int par[200001];
int ss[200001];
vector<int> adj[200001];
vector<int> adj2[200001];

int find(int no){
	if(par[no]==no){
		return no;
	}
	par[no]=find(par[no]);
	return par[no];
}
int co=-1;
int st[200001];
int stt[200001];
void dfs(int no){
	co++;
	st[no]=co;
	stt[co]=no;
	for(auto j:adj[no]){
		dfs(j);
	}
}
int co2=-1;
int st2[200001];
int stt2[200001];
void dfs2(int no){
	co2++;
	st2[no]=co2;
	stt2[co2]=no;

	for(auto j:adj2[no]){
		dfs2(j);
	}

}

pair<int,int> ran[200001];
pair<int,int> ran2[200001];
int vis[200001];

vector<int> tree[800001];
void add(int no,int l,int r,int aa,int bb,int i){
	if(r<aa or l>bb){
		return;
	}
	if(aa<=l and r<=bb){
		tree[no].pb(i);
	}
	else{
		int mid=(l+r)/2;
		add(no*2+1,l,mid,aa,bb,i);
		add(no*2+2,mid+1,r,aa,bb,i);
	}
}
int ans2[200001];
void update(int no,int l,int r,int i){
	for(auto j:tree[no]){
		if(vis[j]==0){
			ans2[j]=1;
		}
	}
	tree[no].clear();
	if(l<r){
		int mid=(l+r)/2;
		if(i<=mid){
			update(no*2+1,l,mid,i);
		}
		else{
			update(no*2+2,mid+1,r,i);
		}
	}
}
//vector<int> pre5[200001];

vector<pair<pair<int,int>,int>> pre5[200001];
vector<int> pre6[200001];
vector<int> check_validity(int n,vector<int> xx,vector<int> yy,
                                vector<int> ss3,vector<int> ee,
                                vector<int> l,vector<int> r) {
	int m=xx.size();
	for(int i=0;i<m;i++){
		pre[min(xx[i],yy[i])].pb({xx[i],yy[i]});
		pre2[max(xx[i],yy[i])].pb({xx[i],yy[i]});
	}
	for(int i=0;i<n;i++){
		par[i]=i;
		ss[i]=1;
	}
	int q=ss3.size();
	for(int i=0;i<q;i++){
		pre3[l[i]].pb({ss3[i],i});
		pre4[r[i]].pb({ee[i],i});
	}
	vector<pair<pair<int,int>,int>> qq;
	for(int i=n-1;i>=0;i--){
		for(auto j:pre[i]){
			int x=find(j.a);
			int y=find(j.b);
			if(x!=y){
			//	cout<<x<<":"<<y<<endl;
				adj[x].pb(y);
				par[y]=x;
				ss[x]+=ss[y];
			}
		}
		for(auto j:pre3[i]){
			qq.pb({{find(j.a),ss[find(j.a)]},j.b});
		//	cout<<j.a<<"."<<find(j.a)<<"/"<<ss[find(j.a)]<<"/"<<j.b<<endl;
		}
	}
	dfs(find(0));
	for(auto j:qq){
		ran[j.b]={st[j.a.a],st[j.a.a]+j.a.b-1};
	}
	/*for(int i=0;i<q;i++){
		cout<<ran[i].a<<":"<<ran[i].b<<endl;
		for(int j=ran[i].a;j<=ran[i].b;j++){
			cout<<stt[j]<<",";
		}
		cout<<endl;
	}*/
	for(int i=0;i<n;i++){
		par[i]=i;
		ss[i]=1;
	}
	vector<pair<pair<int,int>,int>> qq2;
	for(int i=0;i<n;i++){
		for(auto j:pre2[i]){
			int x=find(j.a);
			int y=find(j.b);
			if(x!=y){
				adj2[x].pb(y);
				//cout<<x<<":"<<y<<endl;
				par[y]=x;
				ss[x]+=ss[y];
			}
		}
		for(auto j:pre4[i]){
			qq2.pb({{find(j.a),ss[find(j.a)]},j.b});
		}
	}
	dfs2(find(0));
	for(auto j:qq2){
		ran2[j.b]={st2[j.a.a],st2[j.a.a]+j.a.b-1};
	}




	vector<int> ans;
	for(int i=0;i<q;i++){
		pre5[ran[i].a].pb({ran2[i],i});
		pre6[ran[i].b].pb(i);
		/*for(int j=ran[i].a;j<=ran[i].b;j++){
			vis[stt[j]]+=1;
		}
		int kk=0;
		for(int j=ran2[i].a;j<=ran2[i].b;j++){
			vis[stt2[j]]+=1;
			if(vis[stt2[j]]==2){
				kk=-1;
			}
		}
		ans.pb(kk);
		for(int j=ran[i].a;j<=ran[i].b;j++){
			vis[stt[j]]-=1;
		}
		for(int j=ran2[i].a;j<=ran2[i].b;j++){
			vis[stt2[j]]-=1;
		}*/

	}
	for(int i=0;i<n;i++){
		for(auto j:pre5[i]){
			add(0,0,n-1,j.a.a,j.a.b,j.b);
		}
		update(0,0,n-1,st2[stt[i]]);



		for(auto j:pre6[i]){
			vis[j]=1;
		}
	}
	for(int i=0;i<q;i++){
		ans.pb(ans2[i]);
	}

	return ans;

}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 56864 KB Output is correct
2 Correct 36 ms 56832 KB Output is correct
3 Correct 37 ms 56704 KB Output is correct
4 Correct 36 ms 56704 KB Output is correct
5 Correct 38 ms 56824 KB Output is correct
6 Correct 38 ms 56704 KB Output is correct
7 Correct 37 ms 56696 KB Output is correct
8 Correct 36 ms 56704 KB Output is correct
9 Correct 37 ms 56752 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 56864 KB Output is correct
2 Correct 36 ms 56832 KB Output is correct
3 Correct 37 ms 56704 KB Output is correct
4 Correct 36 ms 56704 KB Output is correct
5 Correct 38 ms 56824 KB Output is correct
6 Correct 38 ms 56704 KB Output is correct
7 Correct 37 ms 56696 KB Output is correct
8 Correct 36 ms 56704 KB Output is correct
9 Correct 37 ms 56752 KB Output is correct
10 Correct 48 ms 57720 KB Output is correct
11 Correct 44 ms 57728 KB Output is correct
12 Correct 43 ms 57600 KB Output is correct
13 Correct 44 ms 57720 KB Output is correct
14 Correct 43 ms 57720 KB Output is correct
15 Correct 45 ms 57848 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 977 ms 116340 KB Output is correct
2 Correct 1008 ms 129576 KB Output is correct
3 Correct 938 ms 127548 KB Output is correct
4 Correct 912 ms 121720 KB Output is correct
5 Correct 884 ms 122024 KB Output is correct
6 Correct 958 ms 120836 KB Output is correct
7 Correct 746 ms 117624 KB Output is correct
8 Correct 970 ms 129576 KB Output is correct
9 Correct 876 ms 123484 KB Output is correct
10 Correct 646 ms 114984 KB Output is correct
11 Correct 686 ms 114060 KB Output is correct
12 Correct 803 ms 118512 KB Output is correct
13 Correct 1081 ms 131844 KB Output is correct
14 Correct 1053 ms 131856 KB Output is correct
15 Correct 1064 ms 131880 KB Output is correct
16 Correct 1064 ms 131748 KB Output is correct
17 Correct 735 ms 117240 KB Output is correct

Subtask #4
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 56864 KB Output is correct
2 Correct 36 ms 56832 KB Output is correct
3 Correct 37 ms 56704 KB Output is correct
4 Correct 36 ms 56704 KB Output is correct
5 Correct 38 ms 56824 KB Output is correct
6 Correct 38 ms 56704 KB Output is correct
7 Correct 37 ms 56696 KB Output is correct
8 Correct 36 ms 56704 KB Output is correct
9 Correct 37 ms 56752 KB Output is correct
10 Correct 48 ms 57720 KB Output is correct
11 Correct 44 ms 57728 KB Output is correct
12 Correct 43 ms 57600 KB Output is correct
13 Correct 44 ms 57720 KB Output is correct
14 Correct 43 ms 57720 KB Output is correct
15 Correct 45 ms 57848 KB Output is correct
16 Correct 977 ms 116340 KB Output is correct
17 Correct 1008 ms 129576 KB Output is correct
18 Correct 938 ms 127548 KB Output is correct
19 Correct 912 ms 121720 KB Output is correct
20 Correct 884 ms 122024 KB Output is correct
21 Correct 958 ms 120836 KB Output is correct
22 Correct 746 ms 117624 KB Output is correct
23 Correct 970 ms 129576 KB Output is correct
24 Correct 876 ms 123484 KB Output is correct
25 Correct 646 ms 114984 KB Output is correct
26 Correct 686 ms 114060 KB Output is correct
27 Correct 803 ms 118512 KB Output is correct
28 Correct 1081 ms 131844 KB Output is correct
29 Correct 1053 ms 131856 KB Output is correct
30 Correct 1064 ms 131880 KB Output is correct
31 Correct 1064 ms 131748 KB Output is correct
32 Correct 735 ms 117240 KB Output is correct
33 Correct 1060 ms 117800 KB Output is correct
34 Correct 493 ms 119188 KB Output is correct
35 Correct 1128 ms 128044 KB Output is correct
36 Correct 1024 ms 125480 KB Output is correct
37 Correct 1121 ms 127124 KB Output is correct
38 Correct 1090 ms 125836 KB Output is correct
39 Correct 1161 ms 130088 KB Output is correct
40 Correct 991 ms 140928 KB Output is correct
41 Correct 938 ms 122920 KB Output is correct
42 Correct 724 ms 119200 KB Output is correct
43 Correct 1195 ms 133164 KB Output is correct
44 Correct 1025 ms 124212 KB Output is correct
45 Correct 1051 ms 133120 KB Output is correct
46 Correct 1096 ms 131064 KB Output is correct
47 Correct 1065 ms 140388 KB Output is correct
48 Correct 1138 ms 139944 KB Output is correct
49 Correct 1116 ms 140456 KB Output is correct
50 Correct 1117 ms 140072 KB Output is correct
51 Correct 950 ms 141160 KB Output is correct
52 Correct 904 ms 141540 KB Output is correct