답안 #388853

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
388853	2021-04-13T07:44:39 Z	huangqr	Joker (BOI20_joker)	C++14	14 / 100	2000 ms	23092 KB

Joker

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pl;
typedef pair<ll,pl> ppl;
const ll lim=4e5+5;
ll par[lim],rnk[lim],rel[lim];
ll parcpy[lim],rnkcpy[lim],relcpy[lim];
 
pl findset(ll par[],ll rel[],ll x){
	ll cur=0,og=x;
	while(x!=par[x]){
		if(rel[x])cur=1-cur;
		x=par[x];
	}
	par[og]=x;
	rel[og]=cur;
	return {x,cur};
}
 
void mergeset(ll par[],ll rnk[],ll rel[],ll x,ll y){
	pl px=findset(par,rel,x),py=findset(par,rel,y);
	x=px.first,y=py.first;
	if(x==y)return;
	if(rnk[x]>rnk[y])swap(x,y);
	if(rnk[x]==rnk[y])rnk[y]++;
	par[x]=y;
	rnk[y]++;
	rel[x]=(px.second==py.second);
	return;
}
 
int main(){
	ios_base::sync_with_stdio(0),cin.tie(NULL);
	ll n,m,q;
	cin>>n>>m>>q;
	for(int i=1;i<=n;i++)par[i]=i;
	vector<pl>v;
	vector<pl>qs[lim];
	for(int i=0;i<m;i++){
		ll a,b;
		cin>>a>>b;
		v.emplace_back(a,b);
	}	
	//v.emplace_back(0,0);
	bool ans[lim],cfa=0;
	fill(ans,ans+lim,0);
	for(int i=0;i<q;i++){
		ll a,b;
		cin>>a>>b;
		b--,b++;//b is the minimum index that can be used on the right side
		qs[b].emplace_back(a,i);
	}
	for(int i=m;i>=m;i--){
		sort(qs[i].begin(),qs[i].end());
		for(int i=1;i<=n;i++)parcpy[i]=par[i],rnkcpy[i]=rnk[i],relcpy[i]=rel[i];
		ll cur=0;
		bool oddc=0;
		for(auto x:qs[i]){
			if(oddc==1){
				ans[x.second]=1;
				continue;
			}
			for(;cur+1<x.first;cur++){
				pl x=findset(parcpy,relcpy,v[cur].first),y=findset(parcpy,relcpy,v[cur].second);
				if(x.first==y.first){
				if(x.second==y.second){
					oddc=1;
				}
			}
				else mergeset(parcpy,rnkcpy,relcpy,v[cur].first,v[cur].second);
			}
			ans[x.second]=oddc;
			
		}
	}
	
	for(int i=m-1;i>=1;i--){
		if(cfa==1){
			for(auto x:qs[i])ans[x.second]=1;
			continue;
		}
		pl x=findset(par,rel,v[i].first),y=findset(par,rel,v[i].second);
		if(x.first==y.first){
			if(x.second==y.second){
				cfa=1;
			}
		}
		else mergeset(par,rnk,rel,v[i].first,v[i].second);
 
		if(qs[i].empty())continue;
		if(cfa==1){
			for(auto x:qs[i])ans[x.second]=1;
			continue;
		}
		
		sort(qs[i].begin(),qs[i].end());
		for(int i=1;i<=n;i++)parcpy[i]=par[i],rnkcpy[i]=rnk[i],relcpy[i]=rel[i];
		ll cur=0;
		bool oddc=0;
		for(auto x:qs[i]){
			if(oddc==1){
				ans[x.second]=1;
				continue;
			}
			for(;cur+1<x.first;cur++){
				pl x=findset(parcpy,relcpy,v[cur].first),y=findset(parcpy,relcpy,v[cur].second);
				if(x.first==y.first){
					if(x.second==y.second){
						oddc=1;
					}
				}
				else mergeset(parcpy,rnkcpy,relcpy,v[cur].first,v[cur].second);
			}
			ans[x.second]=oddc;
			
		}
	}
	for(int i=0;i<q;i++){
		if(ans[i])cout<<"YES\n";
		else cout<<"NO\n";
	}
	return 0;
}

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	10060 KB	Output is correct
2	Correct	7 ms	10060 KB	Output is correct
3	Correct	7 ms	10060 KB	Output is correct
4	Correct	6 ms	10136 KB	Output is correct
5	Correct	6 ms	10068 KB	Output is correct
6	Correct	7 ms	10140 KB	Output is correct
7	Correct	7 ms	10060 KB	Output is correct
8	Correct	7 ms	10060 KB	Output is correct
9	Correct	7 ms	10168 KB	Output is correct
10	Correct	8 ms	10060 KB	Output is correct
11	Correct	7 ms	10060 KB	Output is correct
12	Correct	7 ms	10060 KB	Output is correct
13	Correct	8 ms	10160 KB	Output is correct
14	Correct	7 ms	10060 KB	Output is correct
15	Correct	7 ms	10172 KB	Output is correct
16	Correct	7 ms	10064 KB	Output is correct
17	Correct	7 ms	10104 KB	Output is correct
18	Correct	7 ms	10060 KB	Output is correct
19	Correct	7 ms	10060 KB	Output is correct
20	Correct	7 ms	10060 KB	Output is correct
21	Correct	7 ms	10060 KB	Output is correct
22	Correct	7 ms	10060 KB	Output is correct
23	Correct	7 ms	10060 KB	Output is correct
24	Correct	7 ms	10168 KB	Output is correct
25	Correct	7 ms	10060 KB	Output is correct
26	Correct	7 ms	10160 KB	Output is correct
27	Correct	7 ms	10060 KB	Output is correct
28	Correct	7 ms	10060 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	10060 KB	Output is correct
2	Correct	7 ms	10060 KB	Output is correct
3	Correct	7 ms	10060 KB	Output is correct
4	Correct	6 ms	10136 KB	Output is correct
5	Correct	6 ms	10068 KB	Output is correct
6	Correct	7 ms	10140 KB	Output is correct
7	Correct	7 ms	10060 KB	Output is correct
8	Correct	7 ms	10060 KB	Output is correct
9	Correct	7 ms	10168 KB	Output is correct
10	Correct	8 ms	10060 KB	Output is correct
11	Correct	7 ms	10060 KB	Output is correct
12	Correct	7 ms	10060 KB	Output is correct
13	Correct	8 ms	10160 KB	Output is correct
14	Correct	7 ms	10060 KB	Output is correct
15	Correct	7 ms	10172 KB	Output is correct
16	Correct	7 ms	10064 KB	Output is correct
17	Correct	7 ms	10104 KB	Output is correct
18	Correct	7 ms	10060 KB	Output is correct
19	Correct	7 ms	10060 KB	Output is correct
20	Correct	7 ms	10060 KB	Output is correct
21	Correct	7 ms	10060 KB	Output is correct
22	Correct	7 ms	10060 KB	Output is correct
23	Correct	7 ms	10060 KB	Output is correct
24	Correct	7 ms	10168 KB	Output is correct
25	Correct	7 ms	10060 KB	Output is correct
26	Correct	7 ms	10160 KB	Output is correct
27	Correct	7 ms	10060 KB	Output is correct
28	Correct	7 ms	10060 KB	Output is correct
29	Correct	22 ms	10316 KB	Output is correct
30	Correct	22 ms	10356 KB	Output is correct
31	Correct	24 ms	10340 KB	Output is correct
32	Correct	18 ms	10232 KB	Output is correct
33	Correct	13 ms	10316 KB	Output is correct
34	Correct	23 ms	10368 KB	Output is correct
35	Correct	25 ms	10368 KB	Output is correct
36	Correct	16 ms	10224 KB	Output is correct
37	Correct	27 ms	10368 KB	Output is correct
38	Correct	47 ms	10356 KB	Output is correct
39	Correct	15 ms	10316 KB	Output is correct
40	Correct	17 ms	10316 KB	Output is correct
41	Correct	17 ms	10312 KB	Output is correct
42	Correct	20 ms	10316 KB	Output is correct
43	Correct	26 ms	10188 KB	Output is correct
44	Correct	29 ms	10188 KB	Output is correct
45	Correct	35 ms	10344 KB	Output is correct
46	Correct	41 ms	10316 KB	Output is correct
47	Correct	18 ms	10188 KB	Output is correct
48	Correct	19 ms	10316 KB	Output is correct
49	Correct	22 ms	10316 KB	Output is correct
50	Correct	22 ms	10364 KB	Output is correct
51	Correct	17 ms	10320 KB	Output is correct
52	Correct	20 ms	10380 KB	Output is correct
53	Correct	22 ms	10324 KB	Output is correct
54	Correct	25 ms	10316 KB	Output is correct

Subtask #3
0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	10060 KB	Output is correct
2	Correct	7 ms	10060 KB	Output is correct
3	Execution timed out	2070 ms	23092 KB	Time limit exceeded
4	Halted	0 ms	0 KB	-

Subtask #4
0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	10060 KB	Output is correct
2	Correct	7 ms	10060 KB	Output is correct
3	Correct	7 ms	10060 KB	Output is correct
4	Correct	6 ms	10136 KB	Output is correct
5	Correct	6 ms	10068 KB	Output is correct
6	Correct	7 ms	10140 KB	Output is correct
7	Correct	7 ms	10060 KB	Output is correct
8	Correct	7 ms	10060 KB	Output is correct
9	Correct	7 ms	10168 KB	Output is correct
10	Correct	8 ms	10060 KB	Output is correct
11	Correct	7 ms	10060 KB	Output is correct
12	Correct	7 ms	10060 KB	Output is correct
13	Correct	8 ms	10160 KB	Output is correct
14	Correct	7 ms	10060 KB	Output is correct
15	Correct	7 ms	10172 KB	Output is correct
16	Correct	7 ms	10064 KB	Output is correct
17	Correct	7 ms	10104 KB	Output is correct
18	Correct	7 ms	10060 KB	Output is correct
19	Correct	7 ms	10060 KB	Output is correct
20	Correct	7 ms	10060 KB	Output is correct
21	Correct	7 ms	10060 KB	Output is correct
22	Correct	7 ms	10060 KB	Output is correct
23	Correct	7 ms	10060 KB	Output is correct
24	Correct	7 ms	10168 KB	Output is correct
25	Correct	7 ms	10060 KB	Output is correct
26	Correct	7 ms	10160 KB	Output is correct
27	Correct	7 ms	10060 KB	Output is correct
28	Correct	7 ms	10060 KB	Output is correct
29	Execution timed out	2070 ms	23092 KB	Time limit exceeded
30	Halted	0 ms	0 KB	-

Subtask #5
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	10060 KB	Output is correct
2	Correct	7 ms	10060 KB	Output is correct
3	Correct	7 ms	10060 KB	Output is correct
4	Correct	6 ms	10136 KB	Output is correct
5	Correct	6 ms	10068 KB	Output is correct
6	Correct	7 ms	10140 KB	Output is correct
7	Correct	7 ms	10060 KB	Output is correct
8	Correct	7 ms	10060 KB	Output is correct
9	Correct	7 ms	10168 KB	Output is correct
10	Correct	8 ms	10060 KB	Output is correct
11	Correct	7 ms	10060 KB	Output is correct
12	Correct	7 ms	10060 KB	Output is correct
13	Correct	8 ms	10160 KB	Output is correct
14	Correct	7 ms	10060 KB	Output is correct
15	Correct	7 ms	10172 KB	Output is correct
16	Correct	7 ms	10064 KB	Output is correct
17	Correct	7 ms	10104 KB	Output is correct
18	Correct	7 ms	10060 KB	Output is correct
19	Correct	7 ms	10060 KB	Output is correct
20	Correct	7 ms	10060 KB	Output is correct
21	Correct	7 ms	10060 KB	Output is correct
22	Correct	7 ms	10060 KB	Output is correct
23	Correct	7 ms	10060 KB	Output is correct
24	Correct	7 ms	10168 KB	Output is correct
25	Correct	7 ms	10060 KB	Output is correct
26	Correct	7 ms	10160 KB	Output is correct
27	Correct	7 ms	10060 KB	Output is correct
28	Correct	7 ms	10060 KB	Output is correct
29	Correct	22 ms	10316 KB	Output is correct
30	Correct	22 ms	10356 KB	Output is correct
31	Correct	24 ms	10340 KB	Output is correct
32	Correct	18 ms	10232 KB	Output is correct
33	Correct	13 ms	10316 KB	Output is correct
34	Correct	23 ms	10368 KB	Output is correct
35	Correct	25 ms	10368 KB	Output is correct
36	Correct	16 ms	10224 KB	Output is correct
37	Correct	27 ms	10368 KB	Output is correct
38	Correct	47 ms	10356 KB	Output is correct
39	Correct	15 ms	10316 KB	Output is correct
40	Correct	17 ms	10316 KB	Output is correct
41	Correct	17 ms	10312 KB	Output is correct
42	Correct	20 ms	10316 KB	Output is correct
43	Correct	26 ms	10188 KB	Output is correct
44	Correct	29 ms	10188 KB	Output is correct
45	Correct	35 ms	10344 KB	Output is correct
46	Correct	41 ms	10316 KB	Output is correct
47	Correct	18 ms	10188 KB	Output is correct
48	Correct	19 ms	10316 KB	Output is correct
49	Correct	22 ms	10316 KB	Output is correct
50	Correct	22 ms	10364 KB	Output is correct
51	Correct	17 ms	10320 KB	Output is correct
52	Correct	20 ms	10380 KB	Output is correct
53	Correct	22 ms	10324 KB	Output is correct
54	Correct	25 ms	10316 KB	Output is correct
55	Execution timed out	2075 ms	19600 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

Subtask #6
0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	10060 KB	Output is correct
2	Correct	7 ms	10060 KB	Output is correct
3	Correct	7 ms	10060 KB	Output is correct
4	Correct	6 ms	10136 KB	Output is correct
5	Correct	6 ms	10068 KB	Output is correct
6	Correct	7 ms	10140 KB	Output is correct
7	Correct	7 ms	10060 KB	Output is correct
8	Correct	7 ms	10060 KB	Output is correct
9	Correct	7 ms	10168 KB	Output is correct
10	Correct	8 ms	10060 KB	Output is correct
11	Correct	7 ms	10060 KB	Output is correct
12	Correct	7 ms	10060 KB	Output is correct
13	Correct	8 ms	10160 KB	Output is correct
14	Correct	7 ms	10060 KB	Output is correct
15	Correct	7 ms	10172 KB	Output is correct
16	Correct	7 ms	10064 KB	Output is correct
17	Correct	7 ms	10104 KB	Output is correct
18	Correct	7 ms	10060 KB	Output is correct
19	Correct	7 ms	10060 KB	Output is correct
20	Correct	7 ms	10060 KB	Output is correct
21	Correct	7 ms	10060 KB	Output is correct
22	Correct	7 ms	10060 KB	Output is correct
23	Correct	7 ms	10060 KB	Output is correct
24	Correct	7 ms	10168 KB	Output is correct
25	Correct	7 ms	10060 KB	Output is correct
26	Correct	7 ms	10160 KB	Output is correct
27	Correct	7 ms	10060 KB	Output is correct
28	Correct	7 ms	10060 KB	Output is correct
29	Correct	22 ms	10316 KB	Output is correct
30	Correct	22 ms	10356 KB	Output is correct
31	Correct	24 ms	10340 KB	Output is correct
32	Correct	18 ms	10232 KB	Output is correct
33	Correct	13 ms	10316 KB	Output is correct
34	Correct	23 ms	10368 KB	Output is correct
35	Correct	25 ms	10368 KB	Output is correct
36	Correct	16 ms	10224 KB	Output is correct
37	Correct	27 ms	10368 KB	Output is correct
38	Correct	47 ms	10356 KB	Output is correct
39	Correct	15 ms	10316 KB	Output is correct
40	Correct	17 ms	10316 KB	Output is correct
41	Correct	17 ms	10312 KB	Output is correct
42	Correct	20 ms	10316 KB	Output is correct
43	Correct	26 ms	10188 KB	Output is correct
44	Correct	29 ms	10188 KB	Output is correct
45	Correct	35 ms	10344 KB	Output is correct
46	Correct	41 ms	10316 KB	Output is correct
47	Correct	18 ms	10188 KB	Output is correct
48	Correct	19 ms	10316 KB	Output is correct
49	Correct	22 ms	10316 KB	Output is correct
50	Correct	22 ms	10364 KB	Output is correct
51	Correct	17 ms	10320 KB	Output is correct
52	Correct	20 ms	10380 KB	Output is correct
53	Correct	22 ms	10324 KB	Output is correct
54	Correct	25 ms	10316 KB	Output is correct
55	Execution timed out	2070 ms	23092 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

답안 #388853

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 8.0 / 8.0

Subtask #3 0 / 25.0

Subtask #4 0 / 10.0

Subtask #5 0 / 22.0

Subtask #6 0 / 29.0

Subtask #1
6.0 / 6.0

Subtask #2
8.0 / 8.0

Subtask #3
0 / 25.0

Subtask #4
0 / 10.0

Subtask #5
0 / 22.0

Subtask #6
0 / 29.0