답안 #858812

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
858812	2023-10-09T08:25:34 Z	iskhakkutbilim	Joker (BOI20_joker)	C++17	39 / 100	2000 ms	24144 KB

Joker

#include <bits/stdc++.h>
using namespace std;
 
#define ff first
#define ss second
#define all(a) a.begin(), a.end()
const int N = 2e5;
vector<pair<int, int> > g[N+1];
int n, m, q, timer = 1; 
int used[N+1], lens[N+1];
 
int Left, Right, ok; 
vector< pair<int, int> > query;
void dfs(int v, int par){
	if(ok) return;
	used[v] = timer;
	for(auto [to, idx] : g[v]){
		if(used[to] == timer &&  (idx < Left or idx > Right) && to != par){
			int len = lens[v] - lens[to] + 1;
			if(len % 2 == 1){
				ok = 1;
				return;
			}
		}else if(used[to] < timer && (idx < Left or idx > Right)){
			lens[to] = lens[v] + 1;
			dfs(to, v);
		}
	}
	used[v] = timer+1;
}
 
 
 
 
 
main(){
   ios::sync_with_stdio(0);
   cin.tie(0); cout.tie(0);
	cin >> n >> m >> q;
	for(int i = 0;i < m; i++){
		int a, b; cin >> a >> b;
		g[a].push_back({b, i + 1});
		g[b].push_back({a, i + 1});
	}
	int subtask = 1;
	query.resize(q);
	for(int i = 0;i < q; i++){
		
		cin >> query[i].ff >> query[i].ss;
		if(query[i].ff != 1) subtask = 0;
	}
	if(subtask && max({n, m, q}) > 2000){
		int l = 0, r = m + 1;
		while(l + 1 < r){
			int mid = (l + r) >> 1;
			Left = 1, Right = mid, ok = 0;
			for(int i = 1;i <= n; i++){
				if(used[i] < timer){
					lens[i] = 1;
					dfs(i, -1);
					if(ok) break;
				}
			}
			timer+= 2;
			if(ok) l =mid;
			else r = mid;
		}
		for(int j = 0;j < q; j++){
			if(query[j].ss <= l){
				cout << "YES";
			}else cout << "NO";
			cout << '\n';
		}
		return 0;
	}
	for(int j = 0;j < q; j++){
		Left = query[j].ff, Right = query[j].ss;
		ok = 0;
		for(int i = 1;i <= n; i++){
			if(used[i] < timer){
				lens[i] = 1;
				dfs(i, -1);
				if(ok) break;
			}
		}
		timer+= 2;
		cout << (ok ? "YES" : "NO") << '\n';
	}
	return 0;
}

Compilation message

Joker.cpp:36:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   36 | main(){
      | ^~~~

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	6492 KB	Output is correct
2	Correct	2 ms	6492 KB	Output is correct
3	Correct	2 ms	6488 KB	Output is correct
4	Correct	2 ms	6492 KB	Output is correct
5	Correct	2 ms	6492 KB	Output is correct
6	Correct	2 ms	6492 KB	Output is correct
7	Correct	2 ms	6492 KB	Output is correct
8	Correct	2 ms	6492 KB	Output is correct
9	Correct	2 ms	6492 KB	Output is correct
10	Correct	2 ms	6492 KB	Output is correct
11	Correct	2 ms	6492 KB	Output is correct
12	Correct	2 ms	6488 KB	Output is correct
13	Correct	2 ms	6316 KB	Output is correct
14	Correct	2 ms	6492 KB	Output is correct
15	Correct	3 ms	6492 KB	Output is correct
16	Correct	2 ms	6492 KB	Output is correct
17	Correct	2 ms	6492 KB	Output is correct
18	Correct	2 ms	6492 KB	Output is correct
19	Correct	2 ms	6492 KB	Output is correct
20	Correct	2 ms	6492 KB	Output is correct
21	Correct	2 ms	6492 KB	Output is correct
22	Correct	2 ms	6744 KB	Output is correct
23	Correct	2 ms	6492 KB	Output is correct
24	Correct	2 ms	6544 KB	Output is correct
25	Correct	2 ms	6396 KB	Output is correct
26	Correct	2 ms	6492 KB	Output is correct
27	Correct	2 ms	6492 KB	Output is correct
28	Correct	2 ms	6492 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	6492 KB	Output is correct
2	Correct	2 ms	6492 KB	Output is correct
3	Correct	2 ms	6488 KB	Output is correct
4	Correct	2 ms	6492 KB	Output is correct
5	Correct	2 ms	6492 KB	Output is correct
6	Correct	2 ms	6492 KB	Output is correct
7	Correct	2 ms	6492 KB	Output is correct
8	Correct	2 ms	6492 KB	Output is correct
9	Correct	2 ms	6492 KB	Output is correct
10	Correct	2 ms	6492 KB	Output is correct
11	Correct	2 ms	6492 KB	Output is correct
12	Correct	2 ms	6488 KB	Output is correct
13	Correct	2 ms	6316 KB	Output is correct
14	Correct	2 ms	6492 KB	Output is correct
15	Correct	3 ms	6492 KB	Output is correct
16	Correct	2 ms	6492 KB	Output is correct
17	Correct	2 ms	6492 KB	Output is correct
18	Correct	2 ms	6492 KB	Output is correct
19	Correct	2 ms	6492 KB	Output is correct
20	Correct	2 ms	6492 KB	Output is correct
21	Correct	2 ms	6492 KB	Output is correct
22	Correct	2 ms	6744 KB	Output is correct
23	Correct	2 ms	6492 KB	Output is correct
24	Correct	2 ms	6544 KB	Output is correct
25	Correct	2 ms	6396 KB	Output is correct
26	Correct	2 ms	6492 KB	Output is correct
27	Correct	2 ms	6492 KB	Output is correct
28	Correct	2 ms	6492 KB	Output is correct
29	Correct	61 ms	6492 KB	Output is correct
30	Correct	49 ms	6660 KB	Output is correct
31	Correct	39 ms	6488 KB	Output is correct
32	Correct	23 ms	6680 KB	Output is correct
33	Correct	13 ms	6668 KB	Output is correct
34	Correct	35 ms	6492 KB	Output is correct
35	Correct	55 ms	6488 KB	Output is correct
36	Correct	17 ms	6488 KB	Output is correct
37	Correct	60 ms	6492 KB	Output is correct
38	Correct	51 ms	6492 KB	Output is correct
39	Correct	50 ms	6748 KB	Output is correct
40	Correct	31 ms	6492 KB	Output is correct
41	Correct	29 ms	6492 KB	Output is correct
42	Correct	29 ms	6492 KB	Output is correct
43	Correct	11 ms	6744 KB	Output is correct
44	Correct	8 ms	6492 KB	Output is correct
45	Correct	10 ms	6672 KB	Output is correct
46	Correct	13 ms	6492 KB	Output is correct
47	Correct	29 ms	6684 KB	Output is correct
48	Correct	30 ms	6492 KB	Output is correct
49	Correct	37 ms	6488 KB	Output is correct
50	Correct	42 ms	6492 KB	Output is correct
51	Correct	31 ms	6488 KB	Output is correct
52	Correct	33 ms	6492 KB	Output is correct
53	Correct	41 ms	6492 KB	Output is correct
54	Correct	51 ms	6492 KB	Output is correct

Subtask #3
25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	6492 KB	Output is correct
2	Correct	2 ms	6492 KB	Output is correct
3	Correct	107 ms	18768 KB	Output is correct
4	Correct	233 ms	20564 KB	Output is correct
5	Correct	118 ms	20436 KB	Output is correct
6	Correct	115 ms	20564 KB	Output is correct
7	Correct	99 ms	19228 KB	Output is correct
8	Correct	80 ms	20564 KB	Output is correct
9	Correct	92 ms	20564 KB	Output is correct
10	Correct	171 ms	19700 KB	Output is correct
11	Correct	95 ms	18892 KB	Output is correct
12	Correct	142 ms	19576 KB	Output is correct
13	Correct	73 ms	19280 KB	Output is correct
14	Correct	81 ms	21048 KB	Output is correct
15	Correct	122 ms	20524 KB	Output is correct
16	Correct	175 ms	20092 KB	Output is correct

Subtask #4
0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	6492 KB	Output is correct
2	Correct	2 ms	6492 KB	Output is correct
3	Correct	2 ms	6488 KB	Output is correct
4	Correct	2 ms	6492 KB	Output is correct
5	Correct	2 ms	6492 KB	Output is correct
6	Correct	2 ms	6492 KB	Output is correct
7	Correct	2 ms	6492 KB	Output is correct
8	Correct	2 ms	6492 KB	Output is correct
9	Correct	2 ms	6492 KB	Output is correct
10	Correct	2 ms	6492 KB	Output is correct
11	Correct	2 ms	6492 KB	Output is correct
12	Correct	2 ms	6488 KB	Output is correct
13	Correct	2 ms	6316 KB	Output is correct
14	Correct	2 ms	6492 KB	Output is correct
15	Correct	3 ms	6492 KB	Output is correct
16	Correct	2 ms	6492 KB	Output is correct
17	Correct	2 ms	6492 KB	Output is correct
18	Correct	2 ms	6492 KB	Output is correct
19	Correct	2 ms	6492 KB	Output is correct
20	Correct	2 ms	6492 KB	Output is correct
21	Correct	2 ms	6492 KB	Output is correct
22	Correct	2 ms	6744 KB	Output is correct
23	Correct	2 ms	6492 KB	Output is correct
24	Correct	2 ms	6544 KB	Output is correct
25	Correct	2 ms	6396 KB	Output is correct
26	Correct	2 ms	6492 KB	Output is correct
27	Correct	2 ms	6492 KB	Output is correct
28	Correct	2 ms	6492 KB	Output is correct
29	Correct	107 ms	18768 KB	Output is correct
30	Correct	233 ms	20564 KB	Output is correct
31	Correct	118 ms	20436 KB	Output is correct
32	Correct	115 ms	20564 KB	Output is correct
33	Correct	99 ms	19228 KB	Output is correct
34	Correct	80 ms	20564 KB	Output is correct
35	Correct	92 ms	20564 KB	Output is correct
36	Correct	171 ms	19700 KB	Output is correct
37	Correct	95 ms	18892 KB	Output is correct
38	Correct	142 ms	19576 KB	Output is correct
39	Correct	73 ms	19280 KB	Output is correct
40	Correct	81 ms	21048 KB	Output is correct
41	Correct	122 ms	20524 KB	Output is correct
42	Correct	175 ms	20092 KB	Output is correct
43	Execution timed out	2092 ms	24144 KB	Time limit exceeded
44	Halted	0 ms	0 KB	-

Subtask #5
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	6492 KB	Output is correct
2	Correct	2 ms	6492 KB	Output is correct
3	Correct	2 ms	6488 KB	Output is correct
4	Correct	2 ms	6492 KB	Output is correct
5	Correct	2 ms	6492 KB	Output is correct
6	Correct	2 ms	6492 KB	Output is correct
7	Correct	2 ms	6492 KB	Output is correct
8	Correct	2 ms	6492 KB	Output is correct
9	Correct	2 ms	6492 KB	Output is correct
10	Correct	2 ms	6492 KB	Output is correct
11	Correct	2 ms	6492 KB	Output is correct
12	Correct	2 ms	6488 KB	Output is correct
13	Correct	2 ms	6316 KB	Output is correct
14	Correct	2 ms	6492 KB	Output is correct
15	Correct	3 ms	6492 KB	Output is correct
16	Correct	2 ms	6492 KB	Output is correct
17	Correct	2 ms	6492 KB	Output is correct
18	Correct	2 ms	6492 KB	Output is correct
19	Correct	2 ms	6492 KB	Output is correct
20	Correct	2 ms	6492 KB	Output is correct
21	Correct	2 ms	6492 KB	Output is correct
22	Correct	2 ms	6744 KB	Output is correct
23	Correct	2 ms	6492 KB	Output is correct
24	Correct	2 ms	6544 KB	Output is correct
25	Correct	2 ms	6396 KB	Output is correct
26	Correct	2 ms	6492 KB	Output is correct
27	Correct	2 ms	6492 KB	Output is correct
28	Correct	2 ms	6492 KB	Output is correct
29	Correct	61 ms	6492 KB	Output is correct
30	Correct	49 ms	6660 KB	Output is correct
31	Correct	39 ms	6488 KB	Output is correct
32	Correct	23 ms	6680 KB	Output is correct
33	Correct	13 ms	6668 KB	Output is correct
34	Correct	35 ms	6492 KB	Output is correct
35	Correct	55 ms	6488 KB	Output is correct
36	Correct	17 ms	6488 KB	Output is correct
37	Correct	60 ms	6492 KB	Output is correct
38	Correct	51 ms	6492 KB	Output is correct
39	Correct	50 ms	6748 KB	Output is correct
40	Correct	31 ms	6492 KB	Output is correct
41	Correct	29 ms	6492 KB	Output is correct
42	Correct	29 ms	6492 KB	Output is correct
43	Correct	11 ms	6744 KB	Output is correct
44	Correct	8 ms	6492 KB	Output is correct
45	Correct	10 ms	6672 KB	Output is correct
46	Correct	13 ms	6492 KB	Output is correct
47	Correct	29 ms	6684 KB	Output is correct
48	Correct	30 ms	6492 KB	Output is correct
49	Correct	37 ms	6488 KB	Output is correct
50	Correct	42 ms	6492 KB	Output is correct
51	Correct	31 ms	6488 KB	Output is correct
52	Correct	33 ms	6492 KB	Output is correct
53	Correct	41 ms	6492 KB	Output is correct
54	Correct	51 ms	6492 KB	Output is correct
55	Execution timed out	2040 ms	20432 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

Subtask #6
0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	6492 KB	Output is correct
2	Correct	2 ms	6492 KB	Output is correct
3	Correct	2 ms	6488 KB	Output is correct
4	Correct	2 ms	6492 KB	Output is correct
5	Correct	2 ms	6492 KB	Output is correct
6	Correct	2 ms	6492 KB	Output is correct
7	Correct	2 ms	6492 KB	Output is correct
8	Correct	2 ms	6492 KB	Output is correct
9	Correct	2 ms	6492 KB	Output is correct
10	Correct	2 ms	6492 KB	Output is correct
11	Correct	2 ms	6492 KB	Output is correct
12	Correct	2 ms	6488 KB	Output is correct
13	Correct	2 ms	6316 KB	Output is correct
14	Correct	2 ms	6492 KB	Output is correct
15	Correct	3 ms	6492 KB	Output is correct
16	Correct	2 ms	6492 KB	Output is correct
17	Correct	2 ms	6492 KB	Output is correct
18	Correct	2 ms	6492 KB	Output is correct
19	Correct	2 ms	6492 KB	Output is correct
20	Correct	2 ms	6492 KB	Output is correct
21	Correct	2 ms	6492 KB	Output is correct
22	Correct	2 ms	6744 KB	Output is correct
23	Correct	2 ms	6492 KB	Output is correct
24	Correct	2 ms	6544 KB	Output is correct
25	Correct	2 ms	6396 KB	Output is correct
26	Correct	2 ms	6492 KB	Output is correct
27	Correct	2 ms	6492 KB	Output is correct
28	Correct	2 ms	6492 KB	Output is correct
29	Correct	61 ms	6492 KB	Output is correct
30	Correct	49 ms	6660 KB	Output is correct
31	Correct	39 ms	6488 KB	Output is correct
32	Correct	23 ms	6680 KB	Output is correct
33	Correct	13 ms	6668 KB	Output is correct
34	Correct	35 ms	6492 KB	Output is correct
35	Correct	55 ms	6488 KB	Output is correct
36	Correct	17 ms	6488 KB	Output is correct
37	Correct	60 ms	6492 KB	Output is correct
38	Correct	51 ms	6492 KB	Output is correct
39	Correct	50 ms	6748 KB	Output is correct
40	Correct	31 ms	6492 KB	Output is correct
41	Correct	29 ms	6492 KB	Output is correct
42	Correct	29 ms	6492 KB	Output is correct
43	Correct	11 ms	6744 KB	Output is correct
44	Correct	8 ms	6492 KB	Output is correct
45	Correct	10 ms	6672 KB	Output is correct
46	Correct	13 ms	6492 KB	Output is correct
47	Correct	29 ms	6684 KB	Output is correct
48	Correct	30 ms	6492 KB	Output is correct
49	Correct	37 ms	6488 KB	Output is correct
50	Correct	42 ms	6492 KB	Output is correct
51	Correct	31 ms	6488 KB	Output is correct
52	Correct	33 ms	6492 KB	Output is correct
53	Correct	41 ms	6492 KB	Output is correct
54	Correct	51 ms	6492 KB	Output is correct
55	Correct	107 ms	18768 KB	Output is correct
56	Correct	233 ms	20564 KB	Output is correct
57	Correct	118 ms	20436 KB	Output is correct
58	Correct	115 ms	20564 KB	Output is correct
59	Correct	99 ms	19228 KB	Output is correct
60	Correct	80 ms	20564 KB	Output is correct
61	Correct	92 ms	20564 KB	Output is correct
62	Correct	171 ms	19700 KB	Output is correct
63	Correct	95 ms	18892 KB	Output is correct
64	Correct	142 ms	19576 KB	Output is correct
65	Correct	73 ms	19280 KB	Output is correct
66	Correct	81 ms	21048 KB	Output is correct
67	Correct	122 ms	20524 KB	Output is correct
68	Correct	175 ms	20092 KB	Output is correct
69	Execution timed out	2092 ms	24144 KB	Time limit exceeded
70	Halted	0 ms	0 KB	-

답안 #858812

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 8.0 / 8.0

Subtask #3 25.0 / 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
25.0 / 25.0

Subtask #4
0 / 10.0

Subtask #5
0 / 22.0

Subtask #6
0 / 29.0