Submission #999809

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
999809	2024-06-16T07:13:30 Z	Mr_Husanboy	Joker (BOI20_joker)	C++17	39 / 100	2000 ms	28016 KB

Joker

#include<bits/stdc++.h>
 
using namespace std;
#define ll long long
#define all(a) (a).begin(), (a).end()
#define ff first
#define ss second
 
template<typename T>
int len(T &a){return a.size();}
 
 
struct DSU{
	vector<vector<int>> child;
	vector<int> l;
	vector<int> col;
	int n;
	bool odd = 0;
 
	DSU (int _n){init(_n);}
 
	void init(int _n){
		n = _n;
		child.resize(n);
		l.resize(n); iota(all(l), 0);
		col.assign(n, 0);
		for(int i = 0; i < n; i ++){
			child[i] = {i};
		}
	}
 
	void unite(int a, int b){
		if(l[a] == l[b]){
			if(col[a] == col[b]) odd = 1;
			return;
		}
		if(len(child[l[a]]) > len(child[l[b]])) swap(a, b);
		if(col[a] == col[b]){
			for(auto u : child[l[a]]) col[u] ^= 1;
		}
		a = l[a], b = l[b];
		for(auto u : child[a]){
			child[b].push_back(u);
			l[u] = b;
		}
		child[a].clear();
	}
};
 
void solve(){
	int n, m, q; cin >> n >> m >> q;
	vector<pair<int,int>> edge(m);
	for(auto &[a, b] : edge) cin >> a >> b, a --, b --;
 
	vector<vector<pair<int,int>>> qu(m);
 
	for(int i = 0; i < q; i ++){
		int l, r; 
		cin >> l >> r;
		l --; r --;
		qu[l].push_back({r, i});
	}
	vector<int> ans(q);
	for(int i = 0; i < m; i ++){
		if(len(qu[i]) == 0) continue;
 
		DSU t(n);
		//cout << i << endl;
		for(int j = 0; j < i; j ++){
			//cout << edge[j].ff << endl;
			t.unite(edge[j].ff, edge[j].ss);
		}
		int r = m;
		if(t.odd == 0){
			r = i - 1;
			for(int j = m - 1; j >= i; j --){
				t.unite(edge[j].ff, edge[j].ss);
				if(t.odd){
					r = j;
					break;
				}
			}
		}
		for(auto [rig, j] : qu[i]){
			ans[j] = rig < r;
		}
	}
	for(auto u : ans){
		cout << (u ? "YES" : "NO") << '\n';
	}
}
 
int main(){
	ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
	int tests = 1;
	while(tests --){
		solve();
	}
	#ifdef LOCAL
	cout << "\nDone" << endl;
	#endif
}

Subtask #1
6.0 / 6.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	2 ms	348 KB	Output is correct
9	Correct	2 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	2 ms	348 KB	Output is correct
12	Correct	3 ms	348 KB	Output is correct
13	Correct	1 ms	452 KB	Output is correct
14	Correct	2 ms	348 KB	Output is correct
15	Correct	3 ms	484 KB	Output is correct
16	Correct	2 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	456 KB	Output is correct
22	Correct	2 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct
27	Correct	1 ms	348 KB	Output is correct
28	Correct	2 ms	348 KB	Output is correct

Subtask #2
8.0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	2 ms	348 KB	Output is correct
9	Correct	2 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	2 ms	348 KB	Output is correct
12	Correct	3 ms	348 KB	Output is correct
13	Correct	1 ms	452 KB	Output is correct
14	Correct	2 ms	348 KB	Output is correct
15	Correct	3 ms	484 KB	Output is correct
16	Correct	2 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	456 KB	Output is correct
22	Correct	2 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct
27	Correct	1 ms	348 KB	Output is correct
28	Correct	2 ms	348 KB	Output is correct
29	Correct	83 ms	664 KB	Output is correct
30	Correct	128 ms	728 KB	Output is correct
31	Correct	111 ms	604 KB	Output is correct
32	Correct	71 ms	604 KB	Output is correct
33	Correct	46 ms	604 KB	Output is correct
34	Correct	132 ms	748 KB	Output is correct
35	Correct	133 ms	740 KB	Output is correct
36	Correct	69 ms	604 KB	Output is correct
37	Correct	129 ms	600 KB	Output is correct
38	Correct	149 ms	740 KB	Output is correct
39	Correct	96 ms	508 KB	Output is correct
40	Correct	85 ms	660 KB	Output is correct
41	Correct	68 ms	604 KB	Output is correct
42	Correct	65 ms	604 KB	Output is correct
43	Correct	46 ms	604 KB	Output is correct
44	Correct	70 ms	604 KB	Output is correct
45	Correct	108 ms	604 KB	Output is correct
46	Correct	134 ms	600 KB	Output is correct
47	Correct	58 ms	604 KB	Output is correct
48	Correct	70 ms	604 KB	Output is correct
49	Correct	94 ms	604 KB	Output is correct
50	Correct	131 ms	724 KB	Output is correct
51	Correct	53 ms	604 KB	Output is correct
52	Correct	71 ms	604 KB	Output is correct
53	Correct	95 ms	604 KB	Output is correct
54	Correct	133 ms	604 KB	Output is correct

Subtask #3
25.0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	58 ms	18636 KB	Output is correct
4	Correct	75 ms	25420 KB	Output is correct
5	Correct	62 ms	22480 KB	Output is correct
6	Correct	61 ms	20172 KB	Output is correct
7	Correct	60 ms	20968 KB	Output is correct
8	Correct	60 ms	16584 KB	Output is correct
9	Correct	62 ms	19800 KB	Output is correct
10	Correct	70 ms	25684 KB	Output is correct
11	Correct	61 ms	19916 KB	Output is correct
12	Correct	71 ms	25040 KB	Output is correct
13	Correct	50 ms	15052 KB	Output is correct
14	Correct	71 ms	17356 KB	Output is correct
15	Correct	85 ms	22988 KB	Output is correct
16	Correct	75 ms	26400 KB	Output is correct

Subtask #4
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	2 ms	348 KB	Output is correct
9	Correct	2 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	2 ms	348 KB	Output is correct
12	Correct	3 ms	348 KB	Output is correct
13	Correct	1 ms	452 KB	Output is correct
14	Correct	2 ms	348 KB	Output is correct
15	Correct	3 ms	484 KB	Output is correct
16	Correct	2 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	456 KB	Output is correct
22	Correct	2 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct
27	Correct	1 ms	348 KB	Output is correct
28	Correct	2 ms	348 KB	Output is correct
29	Correct	58 ms	18636 KB	Output is correct
30	Correct	75 ms	25420 KB	Output is correct
31	Correct	62 ms	22480 KB	Output is correct
32	Correct	61 ms	20172 KB	Output is correct
33	Correct	60 ms	20968 KB	Output is correct
34	Correct	60 ms	16584 KB	Output is correct
35	Correct	62 ms	19800 KB	Output is correct
36	Correct	70 ms	25684 KB	Output is correct
37	Correct	61 ms	19916 KB	Output is correct
38	Correct	71 ms	25040 KB	Output is correct
39	Correct	50 ms	15052 KB	Output is correct
40	Correct	71 ms	17356 KB	Output is correct
41	Correct	85 ms	22988 KB	Output is correct
42	Correct	75 ms	26400 KB	Output is correct
43	Correct	1746 ms	21680 KB	Output is correct
44	Execution timed out	2083 ms	28016 KB	Time limit exceeded
45	Halted	0 ms	0 KB	-

Subtask #5
0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	2 ms	348 KB	Output is correct
9	Correct	2 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	2 ms	348 KB	Output is correct
12	Correct	3 ms	348 KB	Output is correct
13	Correct	1 ms	452 KB	Output is correct
14	Correct	2 ms	348 KB	Output is correct
15	Correct	3 ms	484 KB	Output is correct
16	Correct	2 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	456 KB	Output is correct
22	Correct	2 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct
27	Correct	1 ms	348 KB	Output is correct
28	Correct	2 ms	348 KB	Output is correct
29	Correct	83 ms	664 KB	Output is correct
30	Correct	128 ms	728 KB	Output is correct
31	Correct	111 ms	604 KB	Output is correct
32	Correct	71 ms	604 KB	Output is correct
33	Correct	46 ms	604 KB	Output is correct
34	Correct	132 ms	748 KB	Output is correct
35	Correct	133 ms	740 KB	Output is correct
36	Correct	69 ms	604 KB	Output is correct
37	Correct	129 ms	600 KB	Output is correct
38	Correct	149 ms	740 KB	Output is correct
39	Correct	96 ms	508 KB	Output is correct
40	Correct	85 ms	660 KB	Output is correct
41	Correct	68 ms	604 KB	Output is correct
42	Correct	65 ms	604 KB	Output is correct
43	Correct	46 ms	604 KB	Output is correct
44	Correct	70 ms	604 KB	Output is correct
45	Correct	108 ms	604 KB	Output is correct
46	Correct	134 ms	600 KB	Output is correct
47	Correct	58 ms	604 KB	Output is correct
48	Correct	70 ms	604 KB	Output is correct
49	Correct	94 ms	604 KB	Output is correct
50	Correct	131 ms	724 KB	Output is correct
51	Correct	53 ms	604 KB	Output is correct
52	Correct	71 ms	604 KB	Output is correct
53	Correct	95 ms	604 KB	Output is correct
54	Correct	133 ms	604 KB	Output is correct
55	Execution timed out	2013 ms	16628 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

Subtask #6
0 / 29.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	2 ms	348 KB	Output is correct
9	Correct	2 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	2 ms	348 KB	Output is correct
12	Correct	3 ms	348 KB	Output is correct
13	Correct	1 ms	452 KB	Output is correct
14	Correct	2 ms	348 KB	Output is correct
15	Correct	3 ms	484 KB	Output is correct
16	Correct	2 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	456 KB	Output is correct
22	Correct	2 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct
27	Correct	1 ms	348 KB	Output is correct
28	Correct	2 ms	348 KB	Output is correct
29	Correct	83 ms	664 KB	Output is correct
30	Correct	128 ms	728 KB	Output is correct
31	Correct	111 ms	604 KB	Output is correct
32	Correct	71 ms	604 KB	Output is correct
33	Correct	46 ms	604 KB	Output is correct
34	Correct	132 ms	748 KB	Output is correct
35	Correct	133 ms	740 KB	Output is correct
36	Correct	69 ms	604 KB	Output is correct
37	Correct	129 ms	600 KB	Output is correct
38	Correct	149 ms	740 KB	Output is correct
39	Correct	96 ms	508 KB	Output is correct
40	Correct	85 ms	660 KB	Output is correct
41	Correct	68 ms	604 KB	Output is correct
42	Correct	65 ms	604 KB	Output is correct
43	Correct	46 ms	604 KB	Output is correct
44	Correct	70 ms	604 KB	Output is correct
45	Correct	108 ms	604 KB	Output is correct
46	Correct	134 ms	600 KB	Output is correct
47	Correct	58 ms	604 KB	Output is correct
48	Correct	70 ms	604 KB	Output is correct
49	Correct	94 ms	604 KB	Output is correct
50	Correct	131 ms	724 KB	Output is correct
51	Correct	53 ms	604 KB	Output is correct
52	Correct	71 ms	604 KB	Output is correct
53	Correct	95 ms	604 KB	Output is correct
54	Correct	133 ms	604 KB	Output is correct
55	Correct	58 ms	18636 KB	Output is correct
56	Correct	75 ms	25420 KB	Output is correct
57	Correct	62 ms	22480 KB	Output is correct
58	Correct	61 ms	20172 KB	Output is correct
59	Correct	60 ms	20968 KB	Output is correct
60	Correct	60 ms	16584 KB	Output is correct
61	Correct	62 ms	19800 KB	Output is correct
62	Correct	70 ms	25684 KB	Output is correct
63	Correct	61 ms	19916 KB	Output is correct
64	Correct	71 ms	25040 KB	Output is correct
65	Correct	50 ms	15052 KB	Output is correct
66	Correct	71 ms	17356 KB	Output is correct
67	Correct	85 ms	22988 KB	Output is correct
68	Correct	75 ms	26400 KB	Output is correct
69	Correct	1746 ms	21680 KB	Output is correct
70	Execution timed out	2083 ms	28016 KB	Time limit exceeded
71	Halted	0 ms	0 KB	-

Submission #999809

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