답안 #877273

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
877273	2023-11-23T05:17:22 Z	anhduc2701	Joker (BOI20_joker)	C++17	49 / 100	2000 ms	22476 KB

Joker

#pragma GCC optimize("Ofast,unroll-loops")
#include<bits/stdc++.h>
#define pb push_back
#define fi first
#define se second 
using namespace std;
typedef long long ll;
const int maxn=2e5+5;
int n,m,q;
pair<int,int>ed[maxn];
vector<int>G[maxn];
int col[maxn];
int ok=0;
int par[maxn];
int lt[maxn];
int rt[maxn];
vector<int>que[maxn];
inline int fin(int u){
	if(par[u]==u)return u;
	int k=fin(par[u]);
	col[u]=col[par[u]]^col[u];
	return par[u]=k;
}
inline void join(int a,int b){
	int u=fin(a);
	int v=fin(b);
	if(u==v){
		if(col[a]==col[b]){
			ok=1;
		}
		return;
	}
	if(u>v){
		swap(u,v);
		swap(a,b);
	}
	col[v]=col[a]^col[b]^1;
	par[v]=u;
}
bool ans[maxn];
signed main(){
	// freopen("input.inp","r",stdin);
	// freopen("output.out","w",stdout);
	cin.tie(0),cout.tie(0)->sync_with_stdio(0);
	cin >> n >> m >> q;
	for(int i=1;i<=m;i++){
		cin >> ed[i].fi >> ed[i].se;
	}
	if(q<=2000){
		for(int i=1;i<=q;i++){
			cin >> lt[i] >> rt[i];
			for(int j=1;j<=n;j++){
				col[j]=0;
				par[j]=j;
			}
			ok=0;
			for(int j=1;j<=lt[i]-1;j++){
				join(ed[j].fi,ed[j].se);
			}
			for(int j=rt[i]+1;j<=m;j++){
				join(ed[j].fi,ed[j].se);
			}
			if(ok==1){
				cout << "YES\n";
			}
			else{
				cout << "NO\n";
			}
		}
	}
	else{
		for(int i=1;i<=q;i++){
			cin >> lt[i] >> rt[i];
		}
		for(int i=1;i<=min(m,200);i++){
			for(int j=1;j<=m;j++)que[j].clear();
			for(int j=1;j<=q;j++){
				if(lt[j]==i ){
					que[rt[j]].pb(j);
				}
			}
			for(int j=1;j<=n;j++){
				par[j]=j;
				col[j]=0;
			}
			ok=0;
			for(int j=1;j<i;j++){
				join(ed[j].fi,ed[j].se);
			}
			for(int j=m;j>=i;j--){
				for(auto v:que[j]){
					ans[v]=ok;
				}
				join(ed[j].fi,ed[j].se);
			}
		}
		for(int i=1;i<=q;i++){
			if(ans[i])cout << "YES\n";
			else cout << "NO\n";
		}
	}
}

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	12888 KB	Output is correct
2	Correct	4 ms	12888 KB	Output is correct
3	Correct	4 ms	13036 KB	Output is correct
4	Correct	3 ms	12892 KB	Output is correct
5	Correct	3 ms	12892 KB	Output is correct
6	Correct	3 ms	12892 KB	Output is correct
7	Correct	3 ms	12892 KB	Output is correct
8	Correct	4 ms	12892 KB	Output is correct
9	Correct	4 ms	12888 KB	Output is correct
10	Correct	5 ms	13060 KB	Output is correct
11	Correct	4 ms	12892 KB	Output is correct
12	Correct	4 ms	12972 KB	Output is correct
13	Correct	3 ms	12892 KB	Output is correct
14	Correct	4 ms	12892 KB	Output is correct
15	Correct	3 ms	12892 KB	Output is correct
16	Correct	3 ms	12892 KB	Output is correct
17	Correct	4 ms	12892 KB	Output is correct
18	Correct	3 ms	12892 KB	Output is correct
19	Correct	5 ms	12892 KB	Output is correct
20	Correct	3 ms	12900 KB	Output is correct
21	Correct	3 ms	12896 KB	Output is correct
22	Correct	4 ms	13152 KB	Output is correct
23	Correct	4 ms	12900 KB	Output is correct
24	Correct	3 ms	12896 KB	Output is correct
25	Correct	3 ms	12892 KB	Output is correct
26	Correct	3 ms	13144 KB	Output is correct
27	Correct	3 ms	12896 KB	Output is correct
28	Correct	4 ms	12888 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	12888 KB	Output is correct
2	Correct	4 ms	12888 KB	Output is correct
3	Correct	4 ms	13036 KB	Output is correct
4	Correct	3 ms	12892 KB	Output is correct
5	Correct	3 ms	12892 KB	Output is correct
6	Correct	3 ms	12892 KB	Output is correct
7	Correct	3 ms	12892 KB	Output is correct
8	Correct	4 ms	12892 KB	Output is correct
9	Correct	4 ms	12888 KB	Output is correct
10	Correct	5 ms	13060 KB	Output is correct
11	Correct	4 ms	12892 KB	Output is correct
12	Correct	4 ms	12972 KB	Output is correct
13	Correct	3 ms	12892 KB	Output is correct
14	Correct	4 ms	12892 KB	Output is correct
15	Correct	3 ms	12892 KB	Output is correct
16	Correct	3 ms	12892 KB	Output is correct
17	Correct	4 ms	12892 KB	Output is correct
18	Correct	3 ms	12892 KB	Output is correct
19	Correct	5 ms	12892 KB	Output is correct
20	Correct	3 ms	12900 KB	Output is correct
21	Correct	3 ms	12896 KB	Output is correct
22	Correct	4 ms	13152 KB	Output is correct
23	Correct	4 ms	12900 KB	Output is correct
24	Correct	3 ms	12896 KB	Output is correct
25	Correct	3 ms	12892 KB	Output is correct
26	Correct	3 ms	13144 KB	Output is correct
27	Correct	3 ms	12896 KB	Output is correct
28	Correct	4 ms	12888 KB	Output is correct
29	Correct	12 ms	12892 KB	Output is correct
30	Correct	21 ms	12892 KB	Output is correct
31	Correct	26 ms	12888 KB	Output is correct
32	Correct	22 ms	13068 KB	Output is correct
33	Correct	17 ms	12892 KB	Output is correct
34	Correct	22 ms	12900 KB	Output is correct
35	Correct	27 ms	12900 KB	Output is correct
36	Correct	14 ms	12896 KB	Output is correct
37	Correct	16 ms	13080 KB	Output is correct
38	Correct	17 ms	12892 KB	Output is correct
39	Correct	14 ms	12892 KB	Output is correct
40	Correct	18 ms	13068 KB	Output is correct
41	Correct	17 ms	12892 KB	Output is correct
42	Correct	21 ms	12892 KB	Output is correct
43	Correct	20 ms	12892 KB	Output is correct
44	Correct	27 ms	12896 KB	Output is correct
45	Correct	29 ms	12888 KB	Output is correct
46	Correct	27 ms	12896 KB	Output is correct
47	Correct	19 ms	12892 KB	Output is correct
48	Correct	27 ms	12892 KB	Output is correct
49	Correct	21 ms	12888 KB	Output is correct
50	Correct	21 ms	12892 KB	Output is correct
51	Correct	18 ms	12888 KB	Output is correct
52	Correct	19 ms	12888 KB	Output is correct
53	Correct	22 ms	12892 KB	Output is correct
54	Correct	23 ms	12892 KB	Output is correct

Subtask #3
25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	12888 KB	Output is correct
2	Correct	4 ms	12888 KB	Output is correct
3	Correct	517 ms	22476 KB	Output is correct
4	Correct	727 ms	21088 KB	Output is correct
5	Correct	865 ms	21700 KB	Output is correct
6	Correct	843 ms	21500 KB	Output is correct
7	Correct	854 ms	21700 KB	Output is correct
8	Correct	615 ms	21044 KB	Output is correct
9	Correct	817 ms	21076 KB	Output is correct
10	Correct	995 ms	21328 KB	Output is correct
11	Correct	867 ms	21424 KB	Output is correct
12	Correct	894 ms	21608 KB	Output is correct
13	Correct	360 ms	21328 KB	Output is correct
14	Correct	649 ms	21468 KB	Output is correct
15	Correct	921 ms	21476 KB	Output is correct
16	Correct	1059 ms	21588 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	12888 KB	Output is correct
2	Correct	4 ms	12888 KB	Output is correct
3	Correct	4 ms	13036 KB	Output is correct
4	Correct	3 ms	12892 KB	Output is correct
5	Correct	3 ms	12892 KB	Output is correct
6	Correct	3 ms	12892 KB	Output is correct
7	Correct	3 ms	12892 KB	Output is correct
8	Correct	4 ms	12892 KB	Output is correct
9	Correct	4 ms	12888 KB	Output is correct
10	Correct	5 ms	13060 KB	Output is correct
11	Correct	4 ms	12892 KB	Output is correct
12	Correct	4 ms	12972 KB	Output is correct
13	Correct	3 ms	12892 KB	Output is correct
14	Correct	4 ms	12892 KB	Output is correct
15	Correct	3 ms	12892 KB	Output is correct
16	Correct	3 ms	12892 KB	Output is correct
17	Correct	4 ms	12892 KB	Output is correct
18	Correct	3 ms	12892 KB	Output is correct
19	Correct	5 ms	12892 KB	Output is correct
20	Correct	3 ms	12900 KB	Output is correct
21	Correct	3 ms	12896 KB	Output is correct
22	Correct	4 ms	13152 KB	Output is correct
23	Correct	4 ms	12900 KB	Output is correct
24	Correct	3 ms	12896 KB	Output is correct
25	Correct	3 ms	12892 KB	Output is correct
26	Correct	3 ms	13144 KB	Output is correct
27	Correct	3 ms	12896 KB	Output is correct
28	Correct	4 ms	12888 KB	Output is correct
29	Correct	517 ms	22476 KB	Output is correct
30	Correct	727 ms	21088 KB	Output is correct
31	Correct	865 ms	21700 KB	Output is correct
32	Correct	843 ms	21500 KB	Output is correct
33	Correct	854 ms	21700 KB	Output is correct
34	Correct	615 ms	21044 KB	Output is correct
35	Correct	817 ms	21076 KB	Output is correct
36	Correct	995 ms	21328 KB	Output is correct
37	Correct	867 ms	21424 KB	Output is correct
38	Correct	894 ms	21608 KB	Output is correct
39	Correct	360 ms	21328 KB	Output is correct
40	Correct	649 ms	21468 KB	Output is correct
41	Correct	921 ms	21476 KB	Output is correct
42	Correct	1059 ms	21588 KB	Output is correct
43	Correct	499 ms	22464 KB	Output is correct
44	Correct	734 ms	21700 KB	Output is correct
45	Correct	744 ms	21196 KB	Output is correct
46	Correct	863 ms	21252 KB	Output is correct
47	Correct	896 ms	21120 KB	Output is correct
48	Correct	837 ms	21728 KB	Output is correct
49	Correct	1000 ms	21952 KB	Output is correct
50	Correct	853 ms	21236 KB	Output is correct
51	Correct	913 ms	21284 KB	Output is correct
52	Correct	919 ms	21192 KB	Output is correct
53	Correct	368 ms	21152 KB	Output is correct
54	Correct	797 ms	21412 KB	Output is correct
55	Correct	998 ms	21240 KB	Output is correct
56	Correct	1010 ms	21200 KB	Output is correct

Subtask #5
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	12888 KB	Output is correct
2	Correct	4 ms	12888 KB	Output is correct
3	Correct	4 ms	13036 KB	Output is correct
4	Correct	3 ms	12892 KB	Output is correct
5	Correct	3 ms	12892 KB	Output is correct
6	Correct	3 ms	12892 KB	Output is correct
7	Correct	3 ms	12892 KB	Output is correct
8	Correct	4 ms	12892 KB	Output is correct
9	Correct	4 ms	12888 KB	Output is correct
10	Correct	5 ms	13060 KB	Output is correct
11	Correct	4 ms	12892 KB	Output is correct
12	Correct	4 ms	12972 KB	Output is correct
13	Correct	3 ms	12892 KB	Output is correct
14	Correct	4 ms	12892 KB	Output is correct
15	Correct	3 ms	12892 KB	Output is correct
16	Correct	3 ms	12892 KB	Output is correct
17	Correct	4 ms	12892 KB	Output is correct
18	Correct	3 ms	12892 KB	Output is correct
19	Correct	5 ms	12892 KB	Output is correct
20	Correct	3 ms	12900 KB	Output is correct
21	Correct	3 ms	12896 KB	Output is correct
22	Correct	4 ms	13152 KB	Output is correct
23	Correct	4 ms	12900 KB	Output is correct
24	Correct	3 ms	12896 KB	Output is correct
25	Correct	3 ms	12892 KB	Output is correct
26	Correct	3 ms	13144 KB	Output is correct
27	Correct	3 ms	12896 KB	Output is correct
28	Correct	4 ms	12888 KB	Output is correct
29	Correct	12 ms	12892 KB	Output is correct
30	Correct	21 ms	12892 KB	Output is correct
31	Correct	26 ms	12888 KB	Output is correct
32	Correct	22 ms	13068 KB	Output is correct
33	Correct	17 ms	12892 KB	Output is correct
34	Correct	22 ms	12900 KB	Output is correct
35	Correct	27 ms	12900 KB	Output is correct
36	Correct	14 ms	12896 KB	Output is correct
37	Correct	16 ms	13080 KB	Output is correct
38	Correct	17 ms	12892 KB	Output is correct
39	Correct	14 ms	12892 KB	Output is correct
40	Correct	18 ms	13068 KB	Output is correct
41	Correct	17 ms	12892 KB	Output is correct
42	Correct	21 ms	12892 KB	Output is correct
43	Correct	20 ms	12892 KB	Output is correct
44	Correct	27 ms	12896 KB	Output is correct
45	Correct	29 ms	12888 KB	Output is correct
46	Correct	27 ms	12896 KB	Output is correct
47	Correct	19 ms	12892 KB	Output is correct
48	Correct	27 ms	12892 KB	Output is correct
49	Correct	21 ms	12888 KB	Output is correct
50	Correct	21 ms	12892 KB	Output is correct
51	Correct	18 ms	12888 KB	Output is correct
52	Correct	19 ms	12888 KB	Output is correct
53	Correct	22 ms	12892 KB	Output is correct
54	Correct	23 ms	12892 KB	Output is correct
55	Execution timed out	2053 ms	16880 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

Subtask #6
0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	12888 KB	Output is correct
2	Correct	4 ms	12888 KB	Output is correct
3	Correct	4 ms	13036 KB	Output is correct
4	Correct	3 ms	12892 KB	Output is correct
5	Correct	3 ms	12892 KB	Output is correct
6	Correct	3 ms	12892 KB	Output is correct
7	Correct	3 ms	12892 KB	Output is correct
8	Correct	4 ms	12892 KB	Output is correct
9	Correct	4 ms	12888 KB	Output is correct
10	Correct	5 ms	13060 KB	Output is correct
11	Correct	4 ms	12892 KB	Output is correct
12	Correct	4 ms	12972 KB	Output is correct
13	Correct	3 ms	12892 KB	Output is correct
14	Correct	4 ms	12892 KB	Output is correct
15	Correct	3 ms	12892 KB	Output is correct
16	Correct	3 ms	12892 KB	Output is correct
17	Correct	4 ms	12892 KB	Output is correct
18	Correct	3 ms	12892 KB	Output is correct
19	Correct	5 ms	12892 KB	Output is correct
20	Correct	3 ms	12900 KB	Output is correct
21	Correct	3 ms	12896 KB	Output is correct
22	Correct	4 ms	13152 KB	Output is correct
23	Correct	4 ms	12900 KB	Output is correct
24	Correct	3 ms	12896 KB	Output is correct
25	Correct	3 ms	12892 KB	Output is correct
26	Correct	3 ms	13144 KB	Output is correct
27	Correct	3 ms	12896 KB	Output is correct
28	Correct	4 ms	12888 KB	Output is correct
29	Correct	12 ms	12892 KB	Output is correct
30	Correct	21 ms	12892 KB	Output is correct
31	Correct	26 ms	12888 KB	Output is correct
32	Correct	22 ms	13068 KB	Output is correct
33	Correct	17 ms	12892 KB	Output is correct
34	Correct	22 ms	12900 KB	Output is correct
35	Correct	27 ms	12900 KB	Output is correct
36	Correct	14 ms	12896 KB	Output is correct
37	Correct	16 ms	13080 KB	Output is correct
38	Correct	17 ms	12892 KB	Output is correct
39	Correct	14 ms	12892 KB	Output is correct
40	Correct	18 ms	13068 KB	Output is correct
41	Correct	17 ms	12892 KB	Output is correct
42	Correct	21 ms	12892 KB	Output is correct
43	Correct	20 ms	12892 KB	Output is correct
44	Correct	27 ms	12896 KB	Output is correct
45	Correct	29 ms	12888 KB	Output is correct
46	Correct	27 ms	12896 KB	Output is correct
47	Correct	19 ms	12892 KB	Output is correct
48	Correct	27 ms	12892 KB	Output is correct
49	Correct	21 ms	12888 KB	Output is correct
50	Correct	21 ms	12892 KB	Output is correct
51	Correct	18 ms	12888 KB	Output is correct
52	Correct	19 ms	12888 KB	Output is correct
53	Correct	22 ms	12892 KB	Output is correct
54	Correct	23 ms	12892 KB	Output is correct
55	Correct	517 ms	22476 KB	Output is correct
56	Correct	727 ms	21088 KB	Output is correct
57	Correct	865 ms	21700 KB	Output is correct
58	Correct	843 ms	21500 KB	Output is correct
59	Correct	854 ms	21700 KB	Output is correct
60	Correct	615 ms	21044 KB	Output is correct
61	Correct	817 ms	21076 KB	Output is correct
62	Correct	995 ms	21328 KB	Output is correct
63	Correct	867 ms	21424 KB	Output is correct
64	Correct	894 ms	21608 KB	Output is correct
65	Correct	360 ms	21328 KB	Output is correct
66	Correct	649 ms	21468 KB	Output is correct
67	Correct	921 ms	21476 KB	Output is correct
68	Correct	1059 ms	21588 KB	Output is correct
69	Correct	499 ms	22464 KB	Output is correct
70	Correct	734 ms	21700 KB	Output is correct
71	Correct	744 ms	21196 KB	Output is correct
72	Correct	863 ms	21252 KB	Output is correct
73	Correct	896 ms	21120 KB	Output is correct
74	Correct	837 ms	21728 KB	Output is correct
75	Correct	1000 ms	21952 KB	Output is correct
76	Correct	853 ms	21236 KB	Output is correct
77	Correct	913 ms	21284 KB	Output is correct
78	Correct	919 ms	21192 KB	Output is correct
79	Correct	368 ms	21152 KB	Output is correct
80	Correct	797 ms	21412 KB	Output is correct
81	Correct	998 ms	21240 KB	Output is correct
82	Correct	1010 ms	21200 KB	Output is correct
83	Execution timed out	2053 ms	16880 KB	Time limit exceeded
84	Halted	0 ms	0 KB	-

답안 #877273

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 0 / 22.0

Subtask #6 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
0 / 22.0

Subtask #6
0 / 29.0