답안 #893174

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
893174	2023-12-26T15:33:47 Z	amirhoseinfar1385	Joker (BOI20_joker)	C++17	100 / 100	122 ms	6856 KB

Joker

//#pragma GCC optimize("O3,unroll-loops")
//#pragma GCC target("avx2")
#include<bits/stdc++.h>
using namespace std;
const unsigned int maxn=200000+10;
unsigned int n,m,q,dp[maxn],f;
pair<unsigned int,unsigned int>alle[maxn];

struct dsu{
	vector<unsigned int>ha;
	unsigned int par[maxn],sz[maxn];
	unsigned char val[maxn];
	dsu(){
		for(unsigned int i=0;i<maxn;i++){
			par[i]=i;
			sz[i]=1;
		}
	}
	unsigned int root(unsigned int u){
		while(u!=par[u]){
			u=par[u];
		}
		return u;
	}
	unsigned char len(unsigned int u){
		unsigned int ret=0;
		while(u!=par[u]){
			ret+=val[u];
			u=par[u];
		}
		return ret;
	}

	void con(unsigned int u,unsigned int v){
		unsigned int rootu=root(u),rootv=root(v);
		if(rootu!=rootv){
			if(sz[rootu]<sz[rootv]){
				swap(rootu,rootv);
				swap(u,v);
			}
			unsigned char lu=len(u),lv=len(v);
			par[rootv]=rootu;
			sz[rootu]+=sz[rootv];
			if((lu&1)==(lv&1)){
				val[rootv]=1;
			}
			else{
				val[rootv]=0;
			}
			ha.push_back(rootv);
			return ;
		}
		ha.push_back(0);
	}
	bool two(unsigned int u,unsigned int v){
		unsigned int rootu=root(u),rootv=root(v);
		if(rootu!=rootv){
			return 0;
		}
		unsigned char  lu=len(u),lv=len(v);
		if((lu&1)==(lv&1)){
			return 1;
		}
		return 0;
	}
	void back(){
		if((unsigned int)ha.back()==0){
			ha.pop_back();
			return ;
		}
		unsigned int x=ha.back();
		sz[par[x]]-=sz[x];
		par[x]=x;
		val[x]=0;
		ha.pop_back();
		return ;
	}
}ds;

void solve(unsigned int l,unsigned int r,unsigned int tl,unsigned int tr){
	if(l>r){
		return ;
	}
	if(tl==tr){
		for(unsigned int i=l;i<=r;i++){
			dp[i]=tl;
		}
		return ;
	}
	unsigned int opt=0;
	unsigned int now=ds.ha.size();
	unsigned int mid=(l+r)>>1;
	for(unsigned int i=l;i<=mid;i++){
		ds.con(alle[i].first,alle[i].second);
	}
	for(unsigned int i=tr;i>=tl;i--){
		if(ds.two(alle[i].first,alle[i].second)){
			opt=i;
			break;
		}
		ds.con(alle[i].first,alle[i].second);
	}
	dp[mid]=opt;
	while((unsigned int)ds.ha.size()>now){
		ds.back();
	}
	for(unsigned int i=l;i<=mid;i++){
		ds.con(alle[i].first,alle[i].second);
	}
	solve(mid+1,r,opt,tr);
	while((unsigned int)ds.ha.size()>now){
		ds.back();
	}
	for(unsigned int i=tr;i>opt;i--){
		ds.con(alle[i].first,alle[i].second);
	}
	solve(l,mid-1,tl,opt);
	while((unsigned int)ds.ha.size()>now){
		ds.back();
	}
}

unsigned int pre(){
	for(unsigned int i=1;i<=m;i++){
		if(ds.two(alle[i].first,alle[i].second)){
			return i;
		}
		ds.con(alle[i].first,alle[i].second);
	}
	return m+1;
}

unsigned int suf(){
	for(unsigned int i=m;i>=0;i--){
		if(ds.two(alle[i].first,alle[i].second)){
			return i;
		}
		ds.con(alle[i].first,alle[i].second);
	}
	return 0;
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);	
	cin>>n>>m>>q;
	for(unsigned int i=1;i<=m;i++){
		cin>>alle[i].first>>alle[i].second;
	}
	unsigned int ind=pre();
	while((unsigned int)ds.ha.size()>0){
		ds.back();
	}
	solve(1,ind-1,0,m);
	for(unsigned int i=ind;i<=m;i++){
		dp[i]=m+2;
	}
	if((unsigned int)ds.ha.size()!=0){
		assert(0);
	}
	dp[0]=suf();
	for(unsigned int i=0;i<q;i++){
		unsigned int l,r;
		cin>>l>>r;
		if(dp[l-1]<=r){
			cout<<"NO\n";
		}
		else{
			cout<<"YES\n";
		}
	}
}

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2652 KB	Output is correct
2	Correct	1 ms	2652 KB	Output is correct
3	Correct	1 ms	2652 KB	Output is correct
4	Correct	1 ms	2448 KB	Output is correct
5	Correct	1 ms	2652 KB	Output is correct
6	Correct	1 ms	2652 KB	Output is correct
7	Correct	1 ms	2652 KB	Output is correct
8	Correct	1 ms	2652 KB	Output is correct
9	Correct	1 ms	2652 KB	Output is correct
10	Correct	1 ms	2652 KB	Output is correct
11	Correct	1 ms	2652 KB	Output is correct
12	Correct	1 ms	2652 KB	Output is correct
13	Correct	1 ms	2652 KB	Output is correct
14	Correct	1 ms	2648 KB	Output is correct
15	Correct	1 ms	2648 KB	Output is correct
16	Correct	1 ms	2652 KB	Output is correct
17	Correct	1 ms	2652 KB	Output is correct
18	Correct	1 ms	2652 KB	Output is correct
19	Correct	1 ms	2652 KB	Output is correct
20	Correct	1 ms	2652 KB	Output is correct
21	Correct	1 ms	2652 KB	Output is correct
22	Correct	1 ms	2652 KB	Output is correct
23	Correct	1 ms	2648 KB	Output is correct
24	Correct	1 ms	2652 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	1 ms	2652 KB	Output is correct
27	Correct	1 ms	2652 KB	Output is correct
28	Correct	1 ms	2652 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2652 KB	Output is correct
2	Correct	1 ms	2652 KB	Output is correct
3	Correct	1 ms	2652 KB	Output is correct
4	Correct	1 ms	2448 KB	Output is correct
5	Correct	1 ms	2652 KB	Output is correct
6	Correct	1 ms	2652 KB	Output is correct
7	Correct	1 ms	2652 KB	Output is correct
8	Correct	1 ms	2652 KB	Output is correct
9	Correct	1 ms	2652 KB	Output is correct
10	Correct	1 ms	2652 KB	Output is correct
11	Correct	1 ms	2652 KB	Output is correct
12	Correct	1 ms	2652 KB	Output is correct
13	Correct	1 ms	2652 KB	Output is correct
14	Correct	1 ms	2648 KB	Output is correct
15	Correct	1 ms	2648 KB	Output is correct
16	Correct	1 ms	2652 KB	Output is correct
17	Correct	1 ms	2652 KB	Output is correct
18	Correct	1 ms	2652 KB	Output is correct
19	Correct	1 ms	2652 KB	Output is correct
20	Correct	1 ms	2652 KB	Output is correct
21	Correct	1 ms	2652 KB	Output is correct
22	Correct	1 ms	2652 KB	Output is correct
23	Correct	1 ms	2648 KB	Output is correct
24	Correct	1 ms	2652 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	1 ms	2652 KB	Output is correct
27	Correct	1 ms	2652 KB	Output is correct
28	Correct	1 ms	2652 KB	Output is correct
29	Correct	1 ms	2652 KB	Output is correct
30	Correct	1 ms	2652 KB	Output is correct
31	Correct	1 ms	2652 KB	Output is correct
32	Correct	1 ms	2652 KB	Output is correct
33	Correct	1 ms	2652 KB	Output is correct
34	Correct	1 ms	2652 KB	Output is correct
35	Correct	1 ms	2652 KB	Output is correct
36	Correct	1 ms	2652 KB	Output is correct
37	Correct	1 ms	2652 KB	Output is correct
38	Correct	1 ms	2652 KB	Output is correct
39	Correct	1 ms	2652 KB	Output is correct
40	Correct	1 ms	2652 KB	Output is correct
41	Correct	1 ms	2652 KB	Output is correct
42	Correct	1 ms	2652 KB	Output is correct
43	Correct	1 ms	2652 KB	Output is correct
44	Correct	1 ms	2652 KB	Output is correct
45	Correct	2 ms	2652 KB	Output is correct
46	Correct	1 ms	2652 KB	Output is correct
47	Correct	1 ms	2652 KB	Output is correct
48	Correct	1 ms	2652 KB	Output is correct
49	Correct	1 ms	2652 KB	Output is correct
50	Correct	1 ms	2652 KB	Output is correct
51	Correct	1 ms	2648 KB	Output is correct
52	Correct	1 ms	2652 KB	Output is correct
53	Correct	1 ms	2652 KB	Output is correct
54	Correct	1 ms	2648 KB	Output is correct

Subtask #3
25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2652 KB	Output is correct
2	Correct	1 ms	2652 KB	Output is correct
3	Correct	88 ms	5584 KB	Output is correct
4	Correct	108 ms	6856 KB	Output is correct
5	Correct	63 ms	5840 KB	Output is correct
6	Correct	65 ms	5604 KB	Output is correct
7	Correct	61 ms	5584 KB	Output is correct
8	Correct	87 ms	5688 KB	Output is correct
9	Correct	87 ms	5840 KB	Output is correct
10	Correct	108 ms	5784 KB	Output is correct
11	Correct	88 ms	5576 KB	Output is correct
12	Correct	92 ms	5644 KB	Output is correct
13	Correct	87 ms	5592 KB	Output is correct
14	Correct	88 ms	5492 KB	Output is correct
15	Correct	105 ms	5584 KB	Output is correct
16	Correct	111 ms	5588 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2652 KB	Output is correct
2	Correct	1 ms	2652 KB	Output is correct
3	Correct	1 ms	2652 KB	Output is correct
4	Correct	1 ms	2448 KB	Output is correct
5	Correct	1 ms	2652 KB	Output is correct
6	Correct	1 ms	2652 KB	Output is correct
7	Correct	1 ms	2652 KB	Output is correct
8	Correct	1 ms	2652 KB	Output is correct
9	Correct	1 ms	2652 KB	Output is correct
10	Correct	1 ms	2652 KB	Output is correct
11	Correct	1 ms	2652 KB	Output is correct
12	Correct	1 ms	2652 KB	Output is correct
13	Correct	1 ms	2652 KB	Output is correct
14	Correct	1 ms	2648 KB	Output is correct
15	Correct	1 ms	2648 KB	Output is correct
16	Correct	1 ms	2652 KB	Output is correct
17	Correct	1 ms	2652 KB	Output is correct
18	Correct	1 ms	2652 KB	Output is correct
19	Correct	1 ms	2652 KB	Output is correct
20	Correct	1 ms	2652 KB	Output is correct
21	Correct	1 ms	2652 KB	Output is correct
22	Correct	1 ms	2652 KB	Output is correct
23	Correct	1 ms	2648 KB	Output is correct
24	Correct	1 ms	2652 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	1 ms	2652 KB	Output is correct
27	Correct	1 ms	2652 KB	Output is correct
28	Correct	1 ms	2652 KB	Output is correct
29	Correct	88 ms	5584 KB	Output is correct
30	Correct	108 ms	6856 KB	Output is correct
31	Correct	63 ms	5840 KB	Output is correct
32	Correct	65 ms	5604 KB	Output is correct
33	Correct	61 ms	5584 KB	Output is correct
34	Correct	87 ms	5688 KB	Output is correct
35	Correct	87 ms	5840 KB	Output is correct
36	Correct	108 ms	5784 KB	Output is correct
37	Correct	88 ms	5576 KB	Output is correct
38	Correct	92 ms	5644 KB	Output is correct
39	Correct	87 ms	5592 KB	Output is correct
40	Correct	88 ms	5492 KB	Output is correct
41	Correct	105 ms	5584 KB	Output is correct
42	Correct	111 ms	5588 KB	Output is correct
43	Correct	95 ms	5604 KB	Output is correct
44	Correct	110 ms	6784 KB	Output is correct
45	Correct	107 ms	6316 KB	Output is correct
46	Correct	61 ms	5584 KB	Output is correct
47	Correct	67 ms	5736 KB	Output is correct
48	Correct	91 ms	5768 KB	Output is correct
49	Correct	110 ms	5800 KB	Output is correct
50	Correct	93 ms	5472 KB	Output is correct
51	Correct	93 ms	5500 KB	Output is correct
52	Correct	90 ms	5496 KB	Output is correct
53	Correct	87 ms	5584 KB	Output is correct
54	Correct	93 ms	5580 KB	Output is correct
55	Correct	105 ms	5492 KB	Output is correct
56	Correct	109 ms	5508 KB	Output is correct

Subtask #5
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2652 KB	Output is correct
2	Correct	1 ms	2652 KB	Output is correct
3	Correct	1 ms	2652 KB	Output is correct
4	Correct	1 ms	2448 KB	Output is correct
5	Correct	1 ms	2652 KB	Output is correct
6	Correct	1 ms	2652 KB	Output is correct
7	Correct	1 ms	2652 KB	Output is correct
8	Correct	1 ms	2652 KB	Output is correct
9	Correct	1 ms	2652 KB	Output is correct
10	Correct	1 ms	2652 KB	Output is correct
11	Correct	1 ms	2652 KB	Output is correct
12	Correct	1 ms	2652 KB	Output is correct
13	Correct	1 ms	2652 KB	Output is correct
14	Correct	1 ms	2648 KB	Output is correct
15	Correct	1 ms	2648 KB	Output is correct
16	Correct	1 ms	2652 KB	Output is correct
17	Correct	1 ms	2652 KB	Output is correct
18	Correct	1 ms	2652 KB	Output is correct
19	Correct	1 ms	2652 KB	Output is correct
20	Correct	1 ms	2652 KB	Output is correct
21	Correct	1 ms	2652 KB	Output is correct
22	Correct	1 ms	2652 KB	Output is correct
23	Correct	1 ms	2648 KB	Output is correct
24	Correct	1 ms	2652 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	1 ms	2652 KB	Output is correct
27	Correct	1 ms	2652 KB	Output is correct
28	Correct	1 ms	2652 KB	Output is correct
29	Correct	1 ms	2652 KB	Output is correct
30	Correct	1 ms	2652 KB	Output is correct
31	Correct	1 ms	2652 KB	Output is correct
32	Correct	1 ms	2652 KB	Output is correct
33	Correct	1 ms	2652 KB	Output is correct
34	Correct	1 ms	2652 KB	Output is correct
35	Correct	1 ms	2652 KB	Output is correct
36	Correct	1 ms	2652 KB	Output is correct
37	Correct	1 ms	2652 KB	Output is correct
38	Correct	1 ms	2652 KB	Output is correct
39	Correct	1 ms	2652 KB	Output is correct
40	Correct	1 ms	2652 KB	Output is correct
41	Correct	1 ms	2652 KB	Output is correct
42	Correct	1 ms	2652 KB	Output is correct
43	Correct	1 ms	2652 KB	Output is correct
44	Correct	1 ms	2652 KB	Output is correct
45	Correct	2 ms	2652 KB	Output is correct
46	Correct	1 ms	2652 KB	Output is correct
47	Correct	1 ms	2652 KB	Output is correct
48	Correct	1 ms	2652 KB	Output is correct
49	Correct	1 ms	2652 KB	Output is correct
50	Correct	1 ms	2652 KB	Output is correct
51	Correct	1 ms	2648 KB	Output is correct
52	Correct	1 ms	2652 KB	Output is correct
53	Correct	1 ms	2652 KB	Output is correct
54	Correct	1 ms	2648 KB	Output is correct
55	Correct	69 ms	5072 KB	Output is correct
56	Correct	88 ms	6016 KB	Output is correct
57	Correct	39 ms	5324 KB	Output is correct
58	Correct	39 ms	5072 KB	Output is correct
59	Correct	69 ms	5080 KB	Output is correct
60	Correct	90 ms	5072 KB	Output is correct
61	Correct	73 ms	5068 KB	Output is correct
62	Correct	80 ms	5104 KB	Output is correct
63	Correct	59 ms	5080 KB	Output is correct
64	Correct	77 ms	4948 KB	Output is correct
65	Correct	92 ms	5068 KB	Output is correct

Subtask #6
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2652 KB	Output is correct
2	Correct	1 ms	2652 KB	Output is correct
3	Correct	1 ms	2652 KB	Output is correct
4	Correct	1 ms	2448 KB	Output is correct
5	Correct	1 ms	2652 KB	Output is correct
6	Correct	1 ms	2652 KB	Output is correct
7	Correct	1 ms	2652 KB	Output is correct
8	Correct	1 ms	2652 KB	Output is correct
9	Correct	1 ms	2652 KB	Output is correct
10	Correct	1 ms	2652 KB	Output is correct
11	Correct	1 ms	2652 KB	Output is correct
12	Correct	1 ms	2652 KB	Output is correct
13	Correct	1 ms	2652 KB	Output is correct
14	Correct	1 ms	2648 KB	Output is correct
15	Correct	1 ms	2648 KB	Output is correct
16	Correct	1 ms	2652 KB	Output is correct
17	Correct	1 ms	2652 KB	Output is correct
18	Correct	1 ms	2652 KB	Output is correct
19	Correct	1 ms	2652 KB	Output is correct
20	Correct	1 ms	2652 KB	Output is correct
21	Correct	1 ms	2652 KB	Output is correct
22	Correct	1 ms	2652 KB	Output is correct
23	Correct	1 ms	2648 KB	Output is correct
24	Correct	1 ms	2652 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	1 ms	2652 KB	Output is correct
27	Correct	1 ms	2652 KB	Output is correct
28	Correct	1 ms	2652 KB	Output is correct
29	Correct	1 ms	2652 KB	Output is correct
30	Correct	1 ms	2652 KB	Output is correct
31	Correct	1 ms	2652 KB	Output is correct
32	Correct	1 ms	2652 KB	Output is correct
33	Correct	1 ms	2652 KB	Output is correct
34	Correct	1 ms	2652 KB	Output is correct
35	Correct	1 ms	2652 KB	Output is correct
36	Correct	1 ms	2652 KB	Output is correct
37	Correct	1 ms	2652 KB	Output is correct
38	Correct	1 ms	2652 KB	Output is correct
39	Correct	1 ms	2652 KB	Output is correct
40	Correct	1 ms	2652 KB	Output is correct
41	Correct	1 ms	2652 KB	Output is correct
42	Correct	1 ms	2652 KB	Output is correct
43	Correct	1 ms	2652 KB	Output is correct
44	Correct	1 ms	2652 KB	Output is correct
45	Correct	2 ms	2652 KB	Output is correct
46	Correct	1 ms	2652 KB	Output is correct
47	Correct	1 ms	2652 KB	Output is correct
48	Correct	1 ms	2652 KB	Output is correct
49	Correct	1 ms	2652 KB	Output is correct
50	Correct	1 ms	2652 KB	Output is correct
51	Correct	1 ms	2648 KB	Output is correct
52	Correct	1 ms	2652 KB	Output is correct
53	Correct	1 ms	2652 KB	Output is correct
54	Correct	1 ms	2648 KB	Output is correct
55	Correct	88 ms	5584 KB	Output is correct
56	Correct	108 ms	6856 KB	Output is correct
57	Correct	63 ms	5840 KB	Output is correct
58	Correct	65 ms	5604 KB	Output is correct
59	Correct	61 ms	5584 KB	Output is correct
60	Correct	87 ms	5688 KB	Output is correct
61	Correct	87 ms	5840 KB	Output is correct
62	Correct	108 ms	5784 KB	Output is correct
63	Correct	88 ms	5576 KB	Output is correct
64	Correct	92 ms	5644 KB	Output is correct
65	Correct	87 ms	5592 KB	Output is correct
66	Correct	88 ms	5492 KB	Output is correct
67	Correct	105 ms	5584 KB	Output is correct
68	Correct	111 ms	5588 KB	Output is correct
69	Correct	95 ms	5604 KB	Output is correct
70	Correct	110 ms	6784 KB	Output is correct
71	Correct	107 ms	6316 KB	Output is correct
72	Correct	61 ms	5584 KB	Output is correct
73	Correct	67 ms	5736 KB	Output is correct
74	Correct	91 ms	5768 KB	Output is correct
75	Correct	110 ms	5800 KB	Output is correct
76	Correct	93 ms	5472 KB	Output is correct
77	Correct	93 ms	5500 KB	Output is correct
78	Correct	90 ms	5496 KB	Output is correct
79	Correct	87 ms	5584 KB	Output is correct
80	Correct	93 ms	5580 KB	Output is correct
81	Correct	105 ms	5492 KB	Output is correct
82	Correct	109 ms	5508 KB	Output is correct
83	Correct	69 ms	5072 KB	Output is correct
84	Correct	88 ms	6016 KB	Output is correct
85	Correct	39 ms	5324 KB	Output is correct
86	Correct	39 ms	5072 KB	Output is correct
87	Correct	69 ms	5080 KB	Output is correct
88	Correct	90 ms	5072 KB	Output is correct
89	Correct	73 ms	5068 KB	Output is correct
90	Correct	80 ms	5104 KB	Output is correct
91	Correct	59 ms	5080 KB	Output is correct
92	Correct	77 ms	4948 KB	Output is correct
93	Correct	92 ms	5068 KB	Output is correct
94	Correct	92 ms	5652 KB	Output is correct
95	Correct	122 ms	5888 KB	Output is correct
96	Correct	65 ms	6072 KB	Output is correct
97	Correct	64 ms	5664 KB	Output is correct
98	Correct	68 ms	5784 KB	Output is correct
99	Correct	85 ms	5860 KB	Output is correct
100	Correct	86 ms	5724 KB	Output is correct
101	Correct	91 ms	5588 KB	Output is correct
102	Correct	105 ms	6352 KB	Output is correct
103	Correct	112 ms	5728 KB	Output is correct
104	Correct	82 ms	5800 KB	Output is correct
105	Correct	101 ms	5588 KB	Output is correct
106	Correct	119 ms	6100 KB	Output is correct
107	Correct	53 ms	5856 KB	Output is correct
108	Correct	94 ms	5588 KB	Output is correct
109	Correct	91 ms	5584 KB	Output is correct
110	Correct	96 ms	5652 KB	Output is correct
111	Correct	94 ms	5684 KB	Output is correct
112	Correct	91 ms	5584 KB	Output is correct
113	Correct	90 ms	5688 KB	Output is correct
114	Correct	91 ms	5456 KB	Output is correct
115	Correct	90 ms	5584 KB	Output is correct
116	Correct	91 ms	5452 KB	Output is correct

답안 #893174

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 8.0 / 8.0

Subtask #3 25.0 / 25.0

Subtask #4 10.0 / 10.0

Subtask #5 22.0 / 22.0

Subtask #6 29.0 / 29.0

Subtask #1
6.0 / 6.0

Subtask #2
8.0 / 8.0

Subtask #3
25.0 / 25.0

Subtask #4
10.0 / 10.0

Subtask #5
22.0 / 22.0

Subtask #6
29.0 / 29.0