Submission #936009

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
936009	2024-02-29T23:00:58 Z	MinaRagy06	Joker (BOI20_joker)	C++17	14 / 100	2000 ms	6776 KB

Joker

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

const int N = 200'005;
int par[N], sz[N], dep[N];
bool gud;
array<int, 2> find(int u) {
	if (par[u] == u) {
		return {u, 0};
	}
	array<int, 2> v = find(par[u]);
	v[1] ^= dep[u];
	return v;
}
void join(int u, int v) {
	array<int, 2> pu = find(u), pv = find(v);
	if (pu[0] == pv[0]) {
		gud &= dep[pv[0]] == (pv[1] ^ pu[1] ^ 1);
		return;
	}
	if (sz[pu[0]] < sz[pv[0]]) {
		swap(u, v);
		swap(pu, pv);
	}
	par[pv[0]] = pu[0];
	dep[pv[0]] = (pv[1] ^ pu[1] ^ 1);
	sz[pu[0]] += sz[pv[0]];
}
int main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
	int n, m, q;
	cin >> n >> m >> q;
	array<int, 2> e[m];
	for (int i = 0; i < m; i++) {
		cin >> e[i][0] >> e[i][1];
	}
	while (q--) {
		int l, r;
		cin >> l >> r;
		l--, r--;
		for (int i = 1; i <= n; i++) {
			par[i] = i;
			sz[i] = 1;
			dep[i] = 0;
		}
		gud = 1;
		for (int i = 0; i < l; i++) {
			join(e[i][0], e[i][1]);
		}
		for (int i = r + 1; i < m; i++) {
			join(e[i][0], e[i][1]);
		}
		if (gud) {
			cout << "NO\n";
		} else {
			cout << "YES\n";
		}
	}
	return 0;
}

Subtask #1
6.0 / 6.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	2 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2404 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2512 KB	Output is correct
12	Correct	2 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2512 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	1 ms	2396 KB	Output is correct
24	Correct	1 ms	2396 KB	Output is correct
25	Correct	1 ms	2512 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2396 KB	Output is correct
28	Correct	1 ms	2396 KB	Output is correct

Subtask #2
8.0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	2 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2404 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2512 KB	Output is correct
12	Correct	2 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2512 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	1 ms	2396 KB	Output is correct
24	Correct	1 ms	2396 KB	Output is correct
25	Correct	1 ms	2512 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2396 KB	Output is correct
28	Correct	1 ms	2396 KB	Output is correct
29	Correct	13 ms	2556 KB	Output is correct
30	Correct	25 ms	2540 KB	Output is correct
31	Correct	32 ms	2572 KB	Output is correct
32	Correct	29 ms	2396 KB	Output is correct
33	Correct	21 ms	2392 KB	Output is correct
34	Correct	30 ms	2816 KB	Output is correct
35	Correct	28 ms	2392 KB	Output is correct
36	Correct	16 ms	2392 KB	Output is correct
37	Correct	27 ms	2392 KB	Output is correct
38	Correct	28 ms	2396 KB	Output is correct
39	Correct	19 ms	2564 KB	Output is correct
40	Correct	20 ms	2396 KB	Output is correct
41	Correct	24 ms	2652 KB	Output is correct
42	Correct	19 ms	2396 KB	Output is correct
43	Correct	38 ms	2560 KB	Output is correct
44	Correct	40 ms	2648 KB	Output is correct
45	Correct	40 ms	2392 KB	Output is correct
46	Correct	38 ms	2396 KB	Output is correct
47	Correct	19 ms	2396 KB	Output is correct
48	Correct	24 ms	2396 KB	Output is correct
49	Correct	24 ms	2404 KB	Output is correct
50	Correct	28 ms	2396 KB	Output is correct
51	Correct	22 ms	2568 KB	Output is correct
52	Correct	24 ms	2396 KB	Output is correct
53	Correct	25 ms	2568 KB	Output is correct
54	Correct	27 ms	2580 KB	Output is correct

Subtask #3
0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	2 ms	2396 KB	Output is correct
3	Execution timed out	2047 ms	6776 KB	Time limit exceeded
4	Halted	0 ms	0 KB	-

Subtask #4
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	2 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2404 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2512 KB	Output is correct
12	Correct	2 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2512 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	1 ms	2396 KB	Output is correct
24	Correct	1 ms	2396 KB	Output is correct
25	Correct	1 ms	2512 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2396 KB	Output is correct
28	Correct	1 ms	2396 KB	Output is correct
29	Execution timed out	2047 ms	6776 KB	Time limit exceeded
30	Halted	0 ms	0 KB	-

Subtask #5
0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	2 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2404 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2512 KB	Output is correct
12	Correct	2 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2512 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	1 ms	2396 KB	Output is correct
24	Correct	1 ms	2396 KB	Output is correct
25	Correct	1 ms	2512 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2396 KB	Output is correct
28	Correct	1 ms	2396 KB	Output is correct
29	Correct	13 ms	2556 KB	Output is correct
30	Correct	25 ms	2540 KB	Output is correct
31	Correct	32 ms	2572 KB	Output is correct
32	Correct	29 ms	2396 KB	Output is correct
33	Correct	21 ms	2392 KB	Output is correct
34	Correct	30 ms	2816 KB	Output is correct
35	Correct	28 ms	2392 KB	Output is correct
36	Correct	16 ms	2392 KB	Output is correct
37	Correct	27 ms	2392 KB	Output is correct
38	Correct	28 ms	2396 KB	Output is correct
39	Correct	19 ms	2564 KB	Output is correct
40	Correct	20 ms	2396 KB	Output is correct
41	Correct	24 ms	2652 KB	Output is correct
42	Correct	19 ms	2396 KB	Output is correct
43	Correct	38 ms	2560 KB	Output is correct
44	Correct	40 ms	2648 KB	Output is correct
45	Correct	40 ms	2392 KB	Output is correct
46	Correct	38 ms	2396 KB	Output is correct
47	Correct	19 ms	2396 KB	Output is correct
48	Correct	24 ms	2396 KB	Output is correct
49	Correct	24 ms	2404 KB	Output is correct
50	Correct	28 ms	2396 KB	Output is correct
51	Correct	22 ms	2568 KB	Output is correct
52	Correct	24 ms	2396 KB	Output is correct
53	Correct	25 ms	2568 KB	Output is correct
54	Correct	27 ms	2580 KB	Output is correct
55	Execution timed out	2005 ms	6560 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

Subtask #6
0 / 29.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	2 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2404 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2512 KB	Output is correct
12	Correct	2 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2512 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	1 ms	2396 KB	Output is correct
24	Correct	1 ms	2396 KB	Output is correct
25	Correct	1 ms	2512 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2396 KB	Output is correct
28	Correct	1 ms	2396 KB	Output is correct
29	Correct	13 ms	2556 KB	Output is correct
30	Correct	25 ms	2540 KB	Output is correct
31	Correct	32 ms	2572 KB	Output is correct
32	Correct	29 ms	2396 KB	Output is correct
33	Correct	21 ms	2392 KB	Output is correct
34	Correct	30 ms	2816 KB	Output is correct
35	Correct	28 ms	2392 KB	Output is correct
36	Correct	16 ms	2392 KB	Output is correct
37	Correct	27 ms	2392 KB	Output is correct
38	Correct	28 ms	2396 KB	Output is correct
39	Correct	19 ms	2564 KB	Output is correct
40	Correct	20 ms	2396 KB	Output is correct
41	Correct	24 ms	2652 KB	Output is correct
42	Correct	19 ms	2396 KB	Output is correct
43	Correct	38 ms	2560 KB	Output is correct
44	Correct	40 ms	2648 KB	Output is correct
45	Correct	40 ms	2392 KB	Output is correct
46	Correct	38 ms	2396 KB	Output is correct
47	Correct	19 ms	2396 KB	Output is correct
48	Correct	24 ms	2396 KB	Output is correct
49	Correct	24 ms	2404 KB	Output is correct
50	Correct	28 ms	2396 KB	Output is correct
51	Correct	22 ms	2568 KB	Output is correct
52	Correct	24 ms	2396 KB	Output is correct
53	Correct	25 ms	2568 KB	Output is correct
54	Correct	27 ms	2580 KB	Output is correct
55	Execution timed out	2047 ms	6776 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

Submission #936009

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