답안 #416990

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
416990	2021-06-03T09:50:52 Z	aryan12	Joker (BOI20_joker)	C++17	14 / 100	2000 ms	20348 KB

Joker

#include <bits/stdc++.h>
using namespace std;
#define int long long

mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count());

const int N = 200005;
vector<int> g[N];
int color[N];

bool dfs(int node, int col) {
	color[node] = col;
	for(int i = 0; i < g[node].size(); i++) {
		if(color[g[node][i]] == -1) {
			if(dfs(g[node][i], 1 - col))
				return true;
		}
		else if(color[g[node][i]] == color[node])
			return true;
	}
	return false;
}

bool isBipartite(int n) {
	for(int i = 1; i <= n; i++) {
		if(color[i] == -1) {
			if(dfs(i, 0))
				return true;
		}
	}
	return false;
}

void Solve() {
	int n, m, q;
	cin >> n >> m >> q;
	vector<pair<int, int> > edges;
	for(int i = 1; i <= m; i++) {
		int u, v;
		cin >> u >> v;
		edges.push_back(make_pair(u, v));
	}
	for(int i = 1; i <= q; i++) {
		for(int i = 0; i <= n; i++) {
			color[i] = -1;
			g[i].clear();
		}
		int left, right;
		cin >> left >> right;
		left--, right--;
		for(int i = 0; i < left; i++) {
			g[edges[i].first].push_back(edges[i].second);
			g[edges[i].second].push_back(edges[i].first);
		}
		for(int i = right + 1; i < m; i++) {
			g[edges[i].first].push_back(edges[i].second);
			g[edges[i].second].push_back(edges[i].first);	
		}
		if(isBipartite(n)) {
			cout << "YES\n";
		}
		else {
			cout << "NO\n";
		}
	}
}

int32_t main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int t = 1;
	//cin >> t;
	while(t--) {
		Solve();
	}
	return 0;
}

Compilation message

Joker.cpp: In function 'bool dfs(long long int, long long int)':
Joker.cpp:13:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |  for(int i = 0; i < g[node].size(); i++) {
      |                 ~~^~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	4940 KB	Output is correct
2	Correct	3 ms	4912 KB	Output is correct
3	Correct	3 ms	4940 KB	Output is correct
4	Correct	3 ms	5016 KB	Output is correct
5	Correct	3 ms	4940 KB	Output is correct
6	Correct	3 ms	4940 KB	Output is correct
7	Correct	5 ms	4940 KB	Output is correct
8	Correct	4 ms	4940 KB	Output is correct
9	Correct	5 ms	4932 KB	Output is correct
10	Correct	4 ms	4940 KB	Output is correct
11	Correct	4 ms	4940 KB	Output is correct
12	Correct	4 ms	4940 KB	Output is correct
13	Correct	4 ms	4940 KB	Output is correct
14	Correct	4 ms	4940 KB	Output is correct
15	Correct	4 ms	4940 KB	Output is correct
16	Correct	4 ms	5020 KB	Output is correct
17	Correct	4 ms	4940 KB	Output is correct
18	Correct	4 ms	5016 KB	Output is correct
19	Correct	4 ms	4940 KB	Output is correct
20	Correct	4 ms	5012 KB	Output is correct
21	Correct	4 ms	4940 KB	Output is correct
22	Correct	4 ms	4940 KB	Output is correct
23	Correct	4 ms	4940 KB	Output is correct
24	Correct	4 ms	4940 KB	Output is correct
25	Correct	4 ms	5020 KB	Output is correct
26	Correct	4 ms	4940 KB	Output is correct
27	Correct	4 ms	5008 KB	Output is correct
28	Correct	4 ms	4940 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	4940 KB	Output is correct
2	Correct	3 ms	4912 KB	Output is correct
3	Correct	3 ms	4940 KB	Output is correct
4	Correct	3 ms	5016 KB	Output is correct
5	Correct	3 ms	4940 KB	Output is correct
6	Correct	3 ms	4940 KB	Output is correct
7	Correct	5 ms	4940 KB	Output is correct
8	Correct	4 ms	4940 KB	Output is correct
9	Correct	5 ms	4932 KB	Output is correct
10	Correct	4 ms	4940 KB	Output is correct
11	Correct	4 ms	4940 KB	Output is correct
12	Correct	4 ms	4940 KB	Output is correct
13	Correct	4 ms	4940 KB	Output is correct
14	Correct	4 ms	4940 KB	Output is correct
15	Correct	4 ms	4940 KB	Output is correct
16	Correct	4 ms	5020 KB	Output is correct
17	Correct	4 ms	4940 KB	Output is correct
18	Correct	4 ms	5016 KB	Output is correct
19	Correct	4 ms	4940 KB	Output is correct
20	Correct	4 ms	5012 KB	Output is correct
21	Correct	4 ms	4940 KB	Output is correct
22	Correct	4 ms	4940 KB	Output is correct
23	Correct	4 ms	4940 KB	Output is correct
24	Correct	4 ms	4940 KB	Output is correct
25	Correct	4 ms	5020 KB	Output is correct
26	Correct	4 ms	4940 KB	Output is correct
27	Correct	4 ms	5008 KB	Output is correct
28	Correct	4 ms	4940 KB	Output is correct
29	Correct	113 ms	5108 KB	Output is correct
30	Correct	106 ms	5068 KB	Output is correct
31	Correct	91 ms	5172 KB	Output is correct
32	Correct	66 ms	5156 KB	Output is correct
33	Correct	51 ms	5144 KB	Output is correct
34	Correct	96 ms	5176 KB	Output is correct
35	Correct	115 ms	5172 KB	Output is correct
36	Correct	63 ms	5188 KB	Output is correct
37	Correct	149 ms	5188 KB	Output is correct
38	Correct	149 ms	5172 KB	Output is correct
39	Correct	93 ms	5168 KB	Output is correct
40	Correct	62 ms	5172 KB	Output is correct
41	Correct	61 ms	5164 KB	Output is correct
42	Correct	61 ms	5160 KB	Output is correct
43	Correct	75 ms	5068 KB	Output is correct
44	Correct	81 ms	5224 KB	Output is correct
45	Correct	92 ms	5164 KB	Output is correct
46	Correct	97 ms	5068 KB	Output is correct
47	Correct	63 ms	5148 KB	Output is correct
48	Correct	68 ms	5148 KB	Output is correct
49	Correct	82 ms	5144 KB	Output is correct
50	Correct	99 ms	5280 KB	Output is correct
51	Correct	64 ms	5152 KB	Output is correct
52	Correct	72 ms	5068 KB	Output is correct
53	Correct	89 ms	5164 KB	Output is correct
54	Correct	113 ms	5164 KB	Output is correct

Subtask #3
0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	4940 KB	Output is correct
2	Correct	3 ms	4912 KB	Output is correct
3	Execution timed out	2043 ms	19384 KB	Time limit exceeded
4	Halted	0 ms	0 KB	-

Subtask #4
0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	4940 KB	Output is correct
2	Correct	3 ms	4912 KB	Output is correct
3	Correct	3 ms	4940 KB	Output is correct
4	Correct	3 ms	5016 KB	Output is correct
5	Correct	3 ms	4940 KB	Output is correct
6	Correct	3 ms	4940 KB	Output is correct
7	Correct	5 ms	4940 KB	Output is correct
8	Correct	4 ms	4940 KB	Output is correct
9	Correct	5 ms	4932 KB	Output is correct
10	Correct	4 ms	4940 KB	Output is correct
11	Correct	4 ms	4940 KB	Output is correct
12	Correct	4 ms	4940 KB	Output is correct
13	Correct	4 ms	4940 KB	Output is correct
14	Correct	4 ms	4940 KB	Output is correct
15	Correct	4 ms	4940 KB	Output is correct
16	Correct	4 ms	5020 KB	Output is correct
17	Correct	4 ms	4940 KB	Output is correct
18	Correct	4 ms	5016 KB	Output is correct
19	Correct	4 ms	4940 KB	Output is correct
20	Correct	4 ms	5012 KB	Output is correct
21	Correct	4 ms	4940 KB	Output is correct
22	Correct	4 ms	4940 KB	Output is correct
23	Correct	4 ms	4940 KB	Output is correct
24	Correct	4 ms	4940 KB	Output is correct
25	Correct	4 ms	5020 KB	Output is correct
26	Correct	4 ms	4940 KB	Output is correct
27	Correct	4 ms	5008 KB	Output is correct
28	Correct	4 ms	4940 KB	Output is correct
29	Execution timed out	2043 ms	19384 KB	Time limit exceeded
30	Halted	0 ms	0 KB	-

Subtask #5
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	4940 KB	Output is correct
2	Correct	3 ms	4912 KB	Output is correct
3	Correct	3 ms	4940 KB	Output is correct
4	Correct	3 ms	5016 KB	Output is correct
5	Correct	3 ms	4940 KB	Output is correct
6	Correct	3 ms	4940 KB	Output is correct
7	Correct	5 ms	4940 KB	Output is correct
8	Correct	4 ms	4940 KB	Output is correct
9	Correct	5 ms	4932 KB	Output is correct
10	Correct	4 ms	4940 KB	Output is correct
11	Correct	4 ms	4940 KB	Output is correct
12	Correct	4 ms	4940 KB	Output is correct
13	Correct	4 ms	4940 KB	Output is correct
14	Correct	4 ms	4940 KB	Output is correct
15	Correct	4 ms	4940 KB	Output is correct
16	Correct	4 ms	5020 KB	Output is correct
17	Correct	4 ms	4940 KB	Output is correct
18	Correct	4 ms	5016 KB	Output is correct
19	Correct	4 ms	4940 KB	Output is correct
20	Correct	4 ms	5012 KB	Output is correct
21	Correct	4 ms	4940 KB	Output is correct
22	Correct	4 ms	4940 KB	Output is correct
23	Correct	4 ms	4940 KB	Output is correct
24	Correct	4 ms	4940 KB	Output is correct
25	Correct	4 ms	5020 KB	Output is correct
26	Correct	4 ms	4940 KB	Output is correct
27	Correct	4 ms	5008 KB	Output is correct
28	Correct	4 ms	4940 KB	Output is correct
29	Correct	113 ms	5108 KB	Output is correct
30	Correct	106 ms	5068 KB	Output is correct
31	Correct	91 ms	5172 KB	Output is correct
32	Correct	66 ms	5156 KB	Output is correct
33	Correct	51 ms	5144 KB	Output is correct
34	Correct	96 ms	5176 KB	Output is correct
35	Correct	115 ms	5172 KB	Output is correct
36	Correct	63 ms	5188 KB	Output is correct
37	Correct	149 ms	5188 KB	Output is correct
38	Correct	149 ms	5172 KB	Output is correct
39	Correct	93 ms	5168 KB	Output is correct
40	Correct	62 ms	5172 KB	Output is correct
41	Correct	61 ms	5164 KB	Output is correct
42	Correct	61 ms	5160 KB	Output is correct
43	Correct	75 ms	5068 KB	Output is correct
44	Correct	81 ms	5224 KB	Output is correct
45	Correct	92 ms	5164 KB	Output is correct
46	Correct	97 ms	5068 KB	Output is correct
47	Correct	63 ms	5148 KB	Output is correct
48	Correct	68 ms	5148 KB	Output is correct
49	Correct	82 ms	5144 KB	Output is correct
50	Correct	99 ms	5280 KB	Output is correct
51	Correct	64 ms	5152 KB	Output is correct
52	Correct	72 ms	5068 KB	Output is correct
53	Correct	89 ms	5164 KB	Output is correct
54	Correct	113 ms	5164 KB	Output is correct
55	Execution timed out	2074 ms	20348 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	4940 KB	Output is correct
2	Correct	3 ms	4912 KB	Output is correct
3	Correct	3 ms	4940 KB	Output is correct
4	Correct	3 ms	5016 KB	Output is correct
5	Correct	3 ms	4940 KB	Output is correct
6	Correct	3 ms	4940 KB	Output is correct
7	Correct	5 ms	4940 KB	Output is correct
8	Correct	4 ms	4940 KB	Output is correct
9	Correct	5 ms	4932 KB	Output is correct
10	Correct	4 ms	4940 KB	Output is correct
11	Correct	4 ms	4940 KB	Output is correct
12	Correct	4 ms	4940 KB	Output is correct
13	Correct	4 ms	4940 KB	Output is correct
14	Correct	4 ms	4940 KB	Output is correct
15	Correct	4 ms	4940 KB	Output is correct
16	Correct	4 ms	5020 KB	Output is correct
17	Correct	4 ms	4940 KB	Output is correct
18	Correct	4 ms	5016 KB	Output is correct
19	Correct	4 ms	4940 KB	Output is correct
20	Correct	4 ms	5012 KB	Output is correct
21	Correct	4 ms	4940 KB	Output is correct
22	Correct	4 ms	4940 KB	Output is correct
23	Correct	4 ms	4940 KB	Output is correct
24	Correct	4 ms	4940 KB	Output is correct
25	Correct	4 ms	5020 KB	Output is correct
26	Correct	4 ms	4940 KB	Output is correct
27	Correct	4 ms	5008 KB	Output is correct
28	Correct	4 ms	4940 KB	Output is correct
29	Correct	113 ms	5108 KB	Output is correct
30	Correct	106 ms	5068 KB	Output is correct
31	Correct	91 ms	5172 KB	Output is correct
32	Correct	66 ms	5156 KB	Output is correct
33	Correct	51 ms	5144 KB	Output is correct
34	Correct	96 ms	5176 KB	Output is correct
35	Correct	115 ms	5172 KB	Output is correct
36	Correct	63 ms	5188 KB	Output is correct
37	Correct	149 ms	5188 KB	Output is correct
38	Correct	149 ms	5172 KB	Output is correct
39	Correct	93 ms	5168 KB	Output is correct
40	Correct	62 ms	5172 KB	Output is correct
41	Correct	61 ms	5164 KB	Output is correct
42	Correct	61 ms	5160 KB	Output is correct
43	Correct	75 ms	5068 KB	Output is correct
44	Correct	81 ms	5224 KB	Output is correct
45	Correct	92 ms	5164 KB	Output is correct
46	Correct	97 ms	5068 KB	Output is correct
47	Correct	63 ms	5148 KB	Output is correct
48	Correct	68 ms	5148 KB	Output is correct
49	Correct	82 ms	5144 KB	Output is correct
50	Correct	99 ms	5280 KB	Output is correct
51	Correct	64 ms	5152 KB	Output is correct
52	Correct	72 ms	5068 KB	Output is correct
53	Correct	89 ms	5164 KB	Output is correct
54	Correct	113 ms	5164 KB	Output is correct
55	Execution timed out	2043 ms	19384 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

답안 #416990

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