Submission #951198

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
951198	2024-03-21T11:02:09 Z	koukirocks	Joker (BOI20_joker)	C++17	14 / 100	2000 ms	14684 KB

Joker

#include <bits/stdc++.h>
#define speed ios_base::sync_with_stdio(0); cin.tie(0)
#define all(x) (x).begin(),(x).end()
#define F first
#define S second
 
using namespace std;
typedef long long ll;
typedef double db;
typedef long double ldb;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
 
const ll MAX=2e5+10,P=998244353;
const ll INF=0x3f3f3f3f,oo=0x3f3f3f3f3f3f3f3f;

int n,m,q;

struct edge {
	int a,b;
} egs[MAX];

vector<pii> G[MAX];

struct query{
	int l,r,id;
}qry[MAX];

int main() {
	speed;
	cin>>n>>m>>q;
	for (int i=1;i<=m;i++) {
		int a,b;
		cin>>a>>b;
		egs[i]={a,b};
		G[a].emplace_back(b,i);
		G[b].emplace_back(a,i);
	}
	for (int i=1;i<=q;i++) {
		cin>>qry[i].l>>qry[i].r;
		qry[i].id=i;
		bool flag=false;
		vector<int> clr(n+1,-1);
		queue<int> BFS;
		for (int st=1;st<=n;st++) {
			if (clr[st]!=-1) continue;
			clr[st]=0;
			BFS.push(st);
			while (!BFS.empty()) {
				int v=BFS.front();
				BFS.pop();
				for (auto [u,id]:G[v]) {
					if (qry[i].l<=id and id<=qry[i].r) continue;
					if (clr[u]==-1) {
						clr[u]=clr[v]^1;
						BFS.push(u);
					}
					if ((clr[u]^clr[v])==0) {
						flag=true;
						break;
					}
				}
				if (flag) break;
			}
			if (flag) break;
		}
		if (flag) cout<<"YES\n";
		else cout<<"NO\n";
	}
	return 0;
}

Subtask #1
6.0 / 6.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	6488 KB	Output is correct
2	Correct	2 ms	6744 KB	Output is correct
3	Correct	2 ms	6624 KB	Output is correct
4	Correct	2 ms	6492 KB	Output is correct
5	Correct	2 ms	6492 KB	Output is correct
6	Correct	1 ms	6488 KB	Output is correct
7	Correct	2 ms	6492 KB	Output is correct
8	Correct	3 ms	6488 KB	Output is correct
9	Correct	3 ms	6488 KB	Output is correct
10	Correct	1 ms	6492 KB	Output is correct
11	Correct	2 ms	6488 KB	Output is correct
12	Correct	2 ms	6492 KB	Output is correct
13	Correct	2 ms	6492 KB	Output is correct
14	Correct	2 ms	6488 KB	Output is correct
15	Correct	2 ms	6492 KB	Output is correct
16	Correct	2 ms	6640 KB	Output is correct
17	Correct	2 ms	6624 KB	Output is correct
18	Correct	2 ms	6492 KB	Output is correct
19	Correct	2 ms	6488 KB	Output is correct
20	Correct	1 ms	6492 KB	Output is correct
21	Correct	2 ms	6492 KB	Output is correct
22	Correct	2 ms	6492 KB	Output is correct
23	Correct	2 ms	6492 KB	Output is correct
24	Correct	2 ms	6488 KB	Output is correct
25	Correct	1 ms	6492 KB	Output is correct
26	Correct	1 ms	6492 KB	Output is correct
27	Correct	2 ms	6488 KB	Output is correct
28	Correct	2 ms	6492 KB	Output is correct

Subtask #2
8.0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	6488 KB	Output is correct
2	Correct	2 ms	6744 KB	Output is correct
3	Correct	2 ms	6624 KB	Output is correct
4	Correct	2 ms	6492 KB	Output is correct
5	Correct	2 ms	6492 KB	Output is correct
6	Correct	1 ms	6488 KB	Output is correct
7	Correct	2 ms	6492 KB	Output is correct
8	Correct	3 ms	6488 KB	Output is correct
9	Correct	3 ms	6488 KB	Output is correct
10	Correct	1 ms	6492 KB	Output is correct
11	Correct	2 ms	6488 KB	Output is correct
12	Correct	2 ms	6492 KB	Output is correct
13	Correct	2 ms	6492 KB	Output is correct
14	Correct	2 ms	6488 KB	Output is correct
15	Correct	2 ms	6492 KB	Output is correct
16	Correct	2 ms	6640 KB	Output is correct
17	Correct	2 ms	6624 KB	Output is correct
18	Correct	2 ms	6492 KB	Output is correct
19	Correct	2 ms	6488 KB	Output is correct
20	Correct	1 ms	6492 KB	Output is correct
21	Correct	2 ms	6492 KB	Output is correct
22	Correct	2 ms	6492 KB	Output is correct
23	Correct	2 ms	6492 KB	Output is correct
24	Correct	2 ms	6488 KB	Output is correct
25	Correct	1 ms	6492 KB	Output is correct
26	Correct	1 ms	6492 KB	Output is correct
27	Correct	2 ms	6488 KB	Output is correct
28	Correct	2 ms	6492 KB	Output is correct
29	Correct	70 ms	6696 KB	Output is correct
30	Correct	44 ms	6744 KB	Output is correct
31	Correct	32 ms	6624 KB	Output is correct
32	Correct	20 ms	6740 KB	Output is correct
33	Correct	8 ms	6748 KB	Output is correct
34	Correct	31 ms	6748 KB	Output is correct
35	Correct	50 ms	6740 KB	Output is correct
36	Correct	16 ms	6636 KB	Output is correct
37	Correct	67 ms	6980 KB	Output is correct
38	Correct	66 ms	6740 KB	Output is correct
39	Correct	44 ms	6740 KB	Output is correct
40	Correct	24 ms	6748 KB	Output is correct
41	Correct	19 ms	6628 KB	Output is correct
42	Correct	21 ms	6748 KB	Output is correct
43	Correct	3 ms	6744 KB	Output is correct
44	Correct	5 ms	6748 KB	Output is correct
45	Correct	5 ms	6752 KB	Output is correct
46	Correct	9 ms	6744 KB	Output is correct
47	Correct	26 ms	6492 KB	Output is correct
48	Correct	29 ms	6492 KB	Output is correct
49	Correct	38 ms	6740 KB	Output is correct
50	Correct	40 ms	6744 KB	Output is correct
51	Correct	21 ms	6748 KB	Output is correct
52	Correct	26 ms	6740 KB	Output is correct
53	Correct	35 ms	6740 KB	Output is correct
54	Correct	48 ms	7000 KB	Output is correct

Subtask #3
0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	6488 KB	Output is correct
2	Correct	2 ms	6744 KB	Output is correct
3	Execution timed out	2031 ms	14684 KB	Time limit exceeded
4	Halted	0 ms	0 KB	-

Subtask #4
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	6488 KB	Output is correct
2	Correct	2 ms	6744 KB	Output is correct
3	Correct	2 ms	6624 KB	Output is correct
4	Correct	2 ms	6492 KB	Output is correct
5	Correct	2 ms	6492 KB	Output is correct
6	Correct	1 ms	6488 KB	Output is correct
7	Correct	2 ms	6492 KB	Output is correct
8	Correct	3 ms	6488 KB	Output is correct
9	Correct	3 ms	6488 KB	Output is correct
10	Correct	1 ms	6492 KB	Output is correct
11	Correct	2 ms	6488 KB	Output is correct
12	Correct	2 ms	6492 KB	Output is correct
13	Correct	2 ms	6492 KB	Output is correct
14	Correct	2 ms	6488 KB	Output is correct
15	Correct	2 ms	6492 KB	Output is correct
16	Correct	2 ms	6640 KB	Output is correct
17	Correct	2 ms	6624 KB	Output is correct
18	Correct	2 ms	6492 KB	Output is correct
19	Correct	2 ms	6488 KB	Output is correct
20	Correct	1 ms	6492 KB	Output is correct
21	Correct	2 ms	6492 KB	Output is correct
22	Correct	2 ms	6492 KB	Output is correct
23	Correct	2 ms	6492 KB	Output is correct
24	Correct	2 ms	6488 KB	Output is correct
25	Correct	1 ms	6492 KB	Output is correct
26	Correct	1 ms	6492 KB	Output is correct
27	Correct	2 ms	6488 KB	Output is correct
28	Correct	2 ms	6492 KB	Output is correct
29	Execution timed out	2031 ms	14684 KB	Time limit exceeded
30	Halted	0 ms	0 KB	-

Subtask #5
0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	6488 KB	Output is correct
2	Correct	2 ms	6744 KB	Output is correct
3	Correct	2 ms	6624 KB	Output is correct
4	Correct	2 ms	6492 KB	Output is correct
5	Correct	2 ms	6492 KB	Output is correct
6	Correct	1 ms	6488 KB	Output is correct
7	Correct	2 ms	6492 KB	Output is correct
8	Correct	3 ms	6488 KB	Output is correct
9	Correct	3 ms	6488 KB	Output is correct
10	Correct	1 ms	6492 KB	Output is correct
11	Correct	2 ms	6488 KB	Output is correct
12	Correct	2 ms	6492 KB	Output is correct
13	Correct	2 ms	6492 KB	Output is correct
14	Correct	2 ms	6488 KB	Output is correct
15	Correct	2 ms	6492 KB	Output is correct
16	Correct	2 ms	6640 KB	Output is correct
17	Correct	2 ms	6624 KB	Output is correct
18	Correct	2 ms	6492 KB	Output is correct
19	Correct	2 ms	6488 KB	Output is correct
20	Correct	1 ms	6492 KB	Output is correct
21	Correct	2 ms	6492 KB	Output is correct
22	Correct	2 ms	6492 KB	Output is correct
23	Correct	2 ms	6492 KB	Output is correct
24	Correct	2 ms	6488 KB	Output is correct
25	Correct	1 ms	6492 KB	Output is correct
26	Correct	1 ms	6492 KB	Output is correct
27	Correct	2 ms	6488 KB	Output is correct
28	Correct	2 ms	6492 KB	Output is correct
29	Correct	70 ms	6696 KB	Output is correct
30	Correct	44 ms	6744 KB	Output is correct
31	Correct	32 ms	6624 KB	Output is correct
32	Correct	20 ms	6740 KB	Output is correct
33	Correct	8 ms	6748 KB	Output is correct
34	Correct	31 ms	6748 KB	Output is correct
35	Correct	50 ms	6740 KB	Output is correct
36	Correct	16 ms	6636 KB	Output is correct
37	Correct	67 ms	6980 KB	Output is correct
38	Correct	66 ms	6740 KB	Output is correct
39	Correct	44 ms	6740 KB	Output is correct
40	Correct	24 ms	6748 KB	Output is correct
41	Correct	19 ms	6628 KB	Output is correct
42	Correct	21 ms	6748 KB	Output is correct
43	Correct	3 ms	6744 KB	Output is correct
44	Correct	5 ms	6748 KB	Output is correct
45	Correct	5 ms	6752 KB	Output is correct
46	Correct	9 ms	6744 KB	Output is correct
47	Correct	26 ms	6492 KB	Output is correct
48	Correct	29 ms	6492 KB	Output is correct
49	Correct	38 ms	6740 KB	Output is correct
50	Correct	40 ms	6744 KB	Output is correct
51	Correct	21 ms	6748 KB	Output is correct
52	Correct	26 ms	6740 KB	Output is correct
53	Correct	35 ms	6740 KB	Output is correct
54	Correct	48 ms	7000 KB	Output is correct
55	Execution timed out	2045 ms	14548 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

Subtask #6
0 / 29.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	6488 KB	Output is correct
2	Correct	2 ms	6744 KB	Output is correct
3	Correct	2 ms	6624 KB	Output is correct
4	Correct	2 ms	6492 KB	Output is correct
5	Correct	2 ms	6492 KB	Output is correct
6	Correct	1 ms	6488 KB	Output is correct
7	Correct	2 ms	6492 KB	Output is correct
8	Correct	3 ms	6488 KB	Output is correct
9	Correct	3 ms	6488 KB	Output is correct
10	Correct	1 ms	6492 KB	Output is correct
11	Correct	2 ms	6488 KB	Output is correct
12	Correct	2 ms	6492 KB	Output is correct
13	Correct	2 ms	6492 KB	Output is correct
14	Correct	2 ms	6488 KB	Output is correct
15	Correct	2 ms	6492 KB	Output is correct
16	Correct	2 ms	6640 KB	Output is correct
17	Correct	2 ms	6624 KB	Output is correct
18	Correct	2 ms	6492 KB	Output is correct
19	Correct	2 ms	6488 KB	Output is correct
20	Correct	1 ms	6492 KB	Output is correct
21	Correct	2 ms	6492 KB	Output is correct
22	Correct	2 ms	6492 KB	Output is correct
23	Correct	2 ms	6492 KB	Output is correct
24	Correct	2 ms	6488 KB	Output is correct
25	Correct	1 ms	6492 KB	Output is correct
26	Correct	1 ms	6492 KB	Output is correct
27	Correct	2 ms	6488 KB	Output is correct
28	Correct	2 ms	6492 KB	Output is correct
29	Correct	70 ms	6696 KB	Output is correct
30	Correct	44 ms	6744 KB	Output is correct
31	Correct	32 ms	6624 KB	Output is correct
32	Correct	20 ms	6740 KB	Output is correct
33	Correct	8 ms	6748 KB	Output is correct
34	Correct	31 ms	6748 KB	Output is correct
35	Correct	50 ms	6740 KB	Output is correct
36	Correct	16 ms	6636 KB	Output is correct
37	Correct	67 ms	6980 KB	Output is correct
38	Correct	66 ms	6740 KB	Output is correct
39	Correct	44 ms	6740 KB	Output is correct
40	Correct	24 ms	6748 KB	Output is correct
41	Correct	19 ms	6628 KB	Output is correct
42	Correct	21 ms	6748 KB	Output is correct
43	Correct	3 ms	6744 KB	Output is correct
44	Correct	5 ms	6748 KB	Output is correct
45	Correct	5 ms	6752 KB	Output is correct
46	Correct	9 ms	6744 KB	Output is correct
47	Correct	26 ms	6492 KB	Output is correct
48	Correct	29 ms	6492 KB	Output is correct
49	Correct	38 ms	6740 KB	Output is correct
50	Correct	40 ms	6744 KB	Output is correct
51	Correct	21 ms	6748 KB	Output is correct
52	Correct	26 ms	6740 KB	Output is correct
53	Correct	35 ms	6740 KB	Output is correct
54	Correct	48 ms	7000 KB	Output is correct
55	Execution timed out	2031 ms	14684 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

Submission #951198

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