답안 #893171

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
893171	2023-12-26T15:31:03 Z	amirhoseinfar1385	Joker (BOI20_joker)	C++17	100 / 100	133 ms	7368 KB

Joker

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

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

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

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

int pre(){
	for(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;
}

int suf(){
	for(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(int i=1;i<=m;i++){
		cin>>alle[i].first>>alle[i].second;
	}
	int ind=pre();
	while((int)ds.ha.size()>0){
		ds.back();
	}
	solve(1,ind-1,0,m);
	for(int i=ind;i<=m;i++){
		dp[i]=m+2;
	}
	if((int)ds.ha.size()!=0){
		assert(0);
	}
	dp[0]=suf();
	for(int i=0;i<q;i++){
		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	4696 KB	Output is correct
2	Correct	1 ms	4700 KB	Output is correct
3	Correct	1 ms	4700 KB	Output is correct
4	Correct	1 ms	4700 KB	Output is correct
5	Correct	1 ms	4700 KB	Output is correct
6	Correct	1 ms	4700 KB	Output is correct
7	Correct	1 ms	4696 KB	Output is correct
8	Correct	1 ms	4700 KB	Output is correct
9	Correct	1 ms	4700 KB	Output is correct
10	Correct	1 ms	4700 KB	Output is correct
11	Correct	1 ms	4700 KB	Output is correct
12	Correct	1 ms	4696 KB	Output is correct
13	Correct	1 ms	4700 KB	Output is correct
14	Correct	1 ms	4700 KB	Output is correct
15	Correct	1 ms	4700 KB	Output is correct
16	Correct	1 ms	4700 KB	Output is correct
17	Correct	1 ms	4700 KB	Output is correct
18	Correct	1 ms	4700 KB	Output is correct
19	Correct	1 ms	4700 KB	Output is correct
20	Correct	1 ms	4700 KB	Output is correct
21	Correct	2 ms	4696 KB	Output is correct
22	Correct	1 ms	4696 KB	Output is correct
23	Correct	1 ms	4700 KB	Output is correct
24	Correct	1 ms	4700 KB	Output is correct
25	Correct	1 ms	4696 KB	Output is correct
26	Correct	1 ms	4700 KB	Output is correct
27	Correct	1 ms	4700 KB	Output is correct
28	Correct	1 ms	4700 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4696 KB	Output is correct
2	Correct	1 ms	4700 KB	Output is correct
3	Correct	1 ms	4700 KB	Output is correct
4	Correct	1 ms	4700 KB	Output is correct
5	Correct	1 ms	4700 KB	Output is correct
6	Correct	1 ms	4700 KB	Output is correct
7	Correct	1 ms	4696 KB	Output is correct
8	Correct	1 ms	4700 KB	Output is correct
9	Correct	1 ms	4700 KB	Output is correct
10	Correct	1 ms	4700 KB	Output is correct
11	Correct	1 ms	4700 KB	Output is correct
12	Correct	1 ms	4696 KB	Output is correct
13	Correct	1 ms	4700 KB	Output is correct
14	Correct	1 ms	4700 KB	Output is correct
15	Correct	1 ms	4700 KB	Output is correct
16	Correct	1 ms	4700 KB	Output is correct
17	Correct	1 ms	4700 KB	Output is correct
18	Correct	1 ms	4700 KB	Output is correct
19	Correct	1 ms	4700 KB	Output is correct
20	Correct	1 ms	4700 KB	Output is correct
21	Correct	2 ms	4696 KB	Output is correct
22	Correct	1 ms	4696 KB	Output is correct
23	Correct	1 ms	4700 KB	Output is correct
24	Correct	1 ms	4700 KB	Output is correct
25	Correct	1 ms	4696 KB	Output is correct
26	Correct	1 ms	4700 KB	Output is correct
27	Correct	1 ms	4700 KB	Output is correct
28	Correct	1 ms	4700 KB	Output is correct
29	Correct	1 ms	4696 KB	Output is correct
30	Correct	2 ms	4700 KB	Output is correct
31	Correct	2 ms	4700 KB	Output is correct
32	Correct	1 ms	4700 KB	Output is correct
33	Correct	1 ms	4696 KB	Output is correct
34	Correct	2 ms	4696 KB	Output is correct
35	Correct	2 ms	4700 KB	Output is correct
36	Correct	1 ms	4700 KB	Output is correct
37	Correct	2 ms	4700 KB	Output is correct
38	Correct	2 ms	4700 KB	Output is correct
39	Correct	1 ms	4700 KB	Output is correct
40	Correct	1 ms	4700 KB	Output is correct
41	Correct	1 ms	4700 KB	Output is correct
42	Correct	1 ms	4700 KB	Output is correct
43	Correct	2 ms	4700 KB	Output is correct
44	Correct	2 ms	4700 KB	Output is correct
45	Correct	2 ms	4700 KB	Output is correct
46	Correct	2 ms	4700 KB	Output is correct
47	Correct	1 ms	4700 KB	Output is correct
48	Correct	1 ms	4700 KB	Output is correct
49	Correct	2 ms	4700 KB	Output is correct
50	Correct	2 ms	4700 KB	Output is correct
51	Correct	1 ms	4696 KB	Output is correct
52	Correct	2 ms	4696 KB	Output is correct
53	Correct	2 ms	4700 KB	Output is correct
54	Correct	2 ms	4700 KB	Output is correct

Subtask #3
25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4696 KB	Output is correct
2	Correct	1 ms	4700 KB	Output is correct
3	Correct	96 ms	6100 KB	Output is correct
4	Correct	125 ms	7364 KB	Output is correct
5	Correct	71 ms	6592 KB	Output is correct
6	Correct	73 ms	6064 KB	Output is correct
7	Correct	70 ms	6100 KB	Output is correct
8	Correct	104 ms	6500 KB	Output is correct
9	Correct	101 ms	6348 KB	Output is correct
10	Correct	122 ms	6392 KB	Output is correct
11	Correct	103 ms	6200 KB	Output is correct
12	Correct	111 ms	6572 KB	Output is correct
13	Correct	103 ms	6100 KB	Output is correct
14	Correct	99 ms	6044 KB	Output is correct
15	Correct	113 ms	6352 KB	Output is correct
16	Correct	133 ms	6132 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4696 KB	Output is correct
2	Correct	1 ms	4700 KB	Output is correct
3	Correct	1 ms	4700 KB	Output is correct
4	Correct	1 ms	4700 KB	Output is correct
5	Correct	1 ms	4700 KB	Output is correct
6	Correct	1 ms	4700 KB	Output is correct
7	Correct	1 ms	4696 KB	Output is correct
8	Correct	1 ms	4700 KB	Output is correct
9	Correct	1 ms	4700 KB	Output is correct
10	Correct	1 ms	4700 KB	Output is correct
11	Correct	1 ms	4700 KB	Output is correct
12	Correct	1 ms	4696 KB	Output is correct
13	Correct	1 ms	4700 KB	Output is correct
14	Correct	1 ms	4700 KB	Output is correct
15	Correct	1 ms	4700 KB	Output is correct
16	Correct	1 ms	4700 KB	Output is correct
17	Correct	1 ms	4700 KB	Output is correct
18	Correct	1 ms	4700 KB	Output is correct
19	Correct	1 ms	4700 KB	Output is correct
20	Correct	1 ms	4700 KB	Output is correct
21	Correct	2 ms	4696 KB	Output is correct
22	Correct	1 ms	4696 KB	Output is correct
23	Correct	1 ms	4700 KB	Output is correct
24	Correct	1 ms	4700 KB	Output is correct
25	Correct	1 ms	4696 KB	Output is correct
26	Correct	1 ms	4700 KB	Output is correct
27	Correct	1 ms	4700 KB	Output is correct
28	Correct	1 ms	4700 KB	Output is correct
29	Correct	96 ms	6100 KB	Output is correct
30	Correct	125 ms	7364 KB	Output is correct
31	Correct	71 ms	6592 KB	Output is correct
32	Correct	73 ms	6064 KB	Output is correct
33	Correct	70 ms	6100 KB	Output is correct
34	Correct	104 ms	6500 KB	Output is correct
35	Correct	101 ms	6348 KB	Output is correct
36	Correct	122 ms	6392 KB	Output is correct
37	Correct	103 ms	6200 KB	Output is correct
38	Correct	111 ms	6572 KB	Output is correct
39	Correct	103 ms	6100 KB	Output is correct
40	Correct	99 ms	6044 KB	Output is correct
41	Correct	113 ms	6352 KB	Output is correct
42	Correct	133 ms	6132 KB	Output is correct
43	Correct	100 ms	6180 KB	Output is correct
44	Correct	132 ms	7368 KB	Output is correct
45	Correct	123 ms	6644 KB	Output is correct
46	Correct	69 ms	6096 KB	Output is correct
47	Correct	77 ms	6328 KB	Output is correct
48	Correct	99 ms	6304 KB	Output is correct
49	Correct	124 ms	6392 KB	Output is correct
50	Correct	103 ms	6092 KB	Output is correct
51	Correct	107 ms	6100 KB	Output is correct
52	Correct	102 ms	6132 KB	Output is correct
53	Correct	95 ms	6096 KB	Output is correct
54	Correct	109 ms	6100 KB	Output is correct
55	Correct	111 ms	6276 KB	Output is correct
56	Correct	126 ms	6212 KB	Output is correct

Subtask #5
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4696 KB	Output is correct
2	Correct	1 ms	4700 KB	Output is correct
3	Correct	1 ms	4700 KB	Output is correct
4	Correct	1 ms	4700 KB	Output is correct
5	Correct	1 ms	4700 KB	Output is correct
6	Correct	1 ms	4700 KB	Output is correct
7	Correct	1 ms	4696 KB	Output is correct
8	Correct	1 ms	4700 KB	Output is correct
9	Correct	1 ms	4700 KB	Output is correct
10	Correct	1 ms	4700 KB	Output is correct
11	Correct	1 ms	4700 KB	Output is correct
12	Correct	1 ms	4696 KB	Output is correct
13	Correct	1 ms	4700 KB	Output is correct
14	Correct	1 ms	4700 KB	Output is correct
15	Correct	1 ms	4700 KB	Output is correct
16	Correct	1 ms	4700 KB	Output is correct
17	Correct	1 ms	4700 KB	Output is correct
18	Correct	1 ms	4700 KB	Output is correct
19	Correct	1 ms	4700 KB	Output is correct
20	Correct	1 ms	4700 KB	Output is correct
21	Correct	2 ms	4696 KB	Output is correct
22	Correct	1 ms	4696 KB	Output is correct
23	Correct	1 ms	4700 KB	Output is correct
24	Correct	1 ms	4700 KB	Output is correct
25	Correct	1 ms	4696 KB	Output is correct
26	Correct	1 ms	4700 KB	Output is correct
27	Correct	1 ms	4700 KB	Output is correct
28	Correct	1 ms	4700 KB	Output is correct
29	Correct	1 ms	4696 KB	Output is correct
30	Correct	2 ms	4700 KB	Output is correct
31	Correct	2 ms	4700 KB	Output is correct
32	Correct	1 ms	4700 KB	Output is correct
33	Correct	1 ms	4696 KB	Output is correct
34	Correct	2 ms	4696 KB	Output is correct
35	Correct	2 ms	4700 KB	Output is correct
36	Correct	1 ms	4700 KB	Output is correct
37	Correct	2 ms	4700 KB	Output is correct
38	Correct	2 ms	4700 KB	Output is correct
39	Correct	1 ms	4700 KB	Output is correct
40	Correct	1 ms	4700 KB	Output is correct
41	Correct	1 ms	4700 KB	Output is correct
42	Correct	1 ms	4700 KB	Output is correct
43	Correct	2 ms	4700 KB	Output is correct
44	Correct	2 ms	4700 KB	Output is correct
45	Correct	2 ms	4700 KB	Output is correct
46	Correct	2 ms	4700 KB	Output is correct
47	Correct	1 ms	4700 KB	Output is correct
48	Correct	1 ms	4700 KB	Output is correct
49	Correct	2 ms	4700 KB	Output is correct
50	Correct	2 ms	4700 KB	Output is correct
51	Correct	1 ms	4696 KB	Output is correct
52	Correct	2 ms	4696 KB	Output is correct
53	Correct	2 ms	4700 KB	Output is correct
54	Correct	2 ms	4700 KB	Output is correct
55	Correct	76 ms	5584 KB	Output is correct
56	Correct	107 ms	6904 KB	Output is correct
57	Correct	44 ms	5840 KB	Output is correct
58	Correct	50 ms	5588 KB	Output is correct
59	Correct	76 ms	5576 KB	Output is correct
60	Correct	98 ms	5536 KB	Output is correct
61	Correct	78 ms	5584 KB	Output is correct
62	Correct	91 ms	5588 KB	Output is correct
63	Correct	66 ms	5544 KB	Output is correct
64	Correct	84 ms	5584 KB	Output is correct
65	Correct	98 ms	5540 KB	Output is correct

Subtask #6
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4696 KB	Output is correct
2	Correct	1 ms	4700 KB	Output is correct
3	Correct	1 ms	4700 KB	Output is correct
4	Correct	1 ms	4700 KB	Output is correct
5	Correct	1 ms	4700 KB	Output is correct
6	Correct	1 ms	4700 KB	Output is correct
7	Correct	1 ms	4696 KB	Output is correct
8	Correct	1 ms	4700 KB	Output is correct
9	Correct	1 ms	4700 KB	Output is correct
10	Correct	1 ms	4700 KB	Output is correct
11	Correct	1 ms	4700 KB	Output is correct
12	Correct	1 ms	4696 KB	Output is correct
13	Correct	1 ms	4700 KB	Output is correct
14	Correct	1 ms	4700 KB	Output is correct
15	Correct	1 ms	4700 KB	Output is correct
16	Correct	1 ms	4700 KB	Output is correct
17	Correct	1 ms	4700 KB	Output is correct
18	Correct	1 ms	4700 KB	Output is correct
19	Correct	1 ms	4700 KB	Output is correct
20	Correct	1 ms	4700 KB	Output is correct
21	Correct	2 ms	4696 KB	Output is correct
22	Correct	1 ms	4696 KB	Output is correct
23	Correct	1 ms	4700 KB	Output is correct
24	Correct	1 ms	4700 KB	Output is correct
25	Correct	1 ms	4696 KB	Output is correct
26	Correct	1 ms	4700 KB	Output is correct
27	Correct	1 ms	4700 KB	Output is correct
28	Correct	1 ms	4700 KB	Output is correct
29	Correct	1 ms	4696 KB	Output is correct
30	Correct	2 ms	4700 KB	Output is correct
31	Correct	2 ms	4700 KB	Output is correct
32	Correct	1 ms	4700 KB	Output is correct
33	Correct	1 ms	4696 KB	Output is correct
34	Correct	2 ms	4696 KB	Output is correct
35	Correct	2 ms	4700 KB	Output is correct
36	Correct	1 ms	4700 KB	Output is correct
37	Correct	2 ms	4700 KB	Output is correct
38	Correct	2 ms	4700 KB	Output is correct
39	Correct	1 ms	4700 KB	Output is correct
40	Correct	1 ms	4700 KB	Output is correct
41	Correct	1 ms	4700 KB	Output is correct
42	Correct	1 ms	4700 KB	Output is correct
43	Correct	2 ms	4700 KB	Output is correct
44	Correct	2 ms	4700 KB	Output is correct
45	Correct	2 ms	4700 KB	Output is correct
46	Correct	2 ms	4700 KB	Output is correct
47	Correct	1 ms	4700 KB	Output is correct
48	Correct	1 ms	4700 KB	Output is correct
49	Correct	2 ms	4700 KB	Output is correct
50	Correct	2 ms	4700 KB	Output is correct
51	Correct	1 ms	4696 KB	Output is correct
52	Correct	2 ms	4696 KB	Output is correct
53	Correct	2 ms	4700 KB	Output is correct
54	Correct	2 ms	4700 KB	Output is correct
55	Correct	96 ms	6100 KB	Output is correct
56	Correct	125 ms	7364 KB	Output is correct
57	Correct	71 ms	6592 KB	Output is correct
58	Correct	73 ms	6064 KB	Output is correct
59	Correct	70 ms	6100 KB	Output is correct
60	Correct	104 ms	6500 KB	Output is correct
61	Correct	101 ms	6348 KB	Output is correct
62	Correct	122 ms	6392 KB	Output is correct
63	Correct	103 ms	6200 KB	Output is correct
64	Correct	111 ms	6572 KB	Output is correct
65	Correct	103 ms	6100 KB	Output is correct
66	Correct	99 ms	6044 KB	Output is correct
67	Correct	113 ms	6352 KB	Output is correct
68	Correct	133 ms	6132 KB	Output is correct
69	Correct	100 ms	6180 KB	Output is correct
70	Correct	132 ms	7368 KB	Output is correct
71	Correct	123 ms	6644 KB	Output is correct
72	Correct	69 ms	6096 KB	Output is correct
73	Correct	77 ms	6328 KB	Output is correct
74	Correct	99 ms	6304 KB	Output is correct
75	Correct	124 ms	6392 KB	Output is correct
76	Correct	103 ms	6092 KB	Output is correct
77	Correct	107 ms	6100 KB	Output is correct
78	Correct	102 ms	6132 KB	Output is correct
79	Correct	95 ms	6096 KB	Output is correct
80	Correct	109 ms	6100 KB	Output is correct
81	Correct	111 ms	6276 KB	Output is correct
82	Correct	126 ms	6212 KB	Output is correct
83	Correct	76 ms	5584 KB	Output is correct
84	Correct	107 ms	6904 KB	Output is correct
85	Correct	44 ms	5840 KB	Output is correct
86	Correct	50 ms	5588 KB	Output is correct
87	Correct	76 ms	5576 KB	Output is correct
88	Correct	98 ms	5536 KB	Output is correct
89	Correct	78 ms	5584 KB	Output is correct
90	Correct	91 ms	5588 KB	Output is correct
91	Correct	66 ms	5544 KB	Output is correct
92	Correct	84 ms	5584 KB	Output is correct
93	Correct	98 ms	5540 KB	Output is correct
94	Correct	105 ms	6356 KB	Output is correct
95	Correct	131 ms	6604 KB	Output is correct
96	Correct	74 ms	6608 KB	Output is correct
97	Correct	75 ms	6372 KB	Output is correct
98	Correct	93 ms	6180 KB	Output is correct
99	Correct	94 ms	6356 KB	Output is correct
100	Correct	101 ms	6356 KB	Output is correct
101	Correct	112 ms	6380 KB	Output is correct
102	Correct	111 ms	6284 KB	Output is correct
103	Correct	120 ms	6360 KB	Output is correct
104	Correct	95 ms	6304 KB	Output is correct
105	Correct	114 ms	6392 KB	Output is correct
106	Correct	128 ms	6304 KB	Output is correct
107	Correct	61 ms	6564 KB	Output is correct
108	Correct	105 ms	6552 KB	Output is correct
109	Correct	101 ms	6136 KB	Output is correct
110	Correct	102 ms	6292 KB	Output is correct
111	Correct	101 ms	6096 KB	Output is correct
112	Correct	99 ms	6100 KB	Output is correct
113	Correct	106 ms	6612 KB	Output is correct
114	Correct	102 ms	6280 KB	Output is correct
115	Correct	101 ms	6260 KB	Output is correct
116	Correct	100 ms	6044 KB	Output is correct

답안 #893171

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