Submission #770826

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
770826	2023-07-02T03:27:44 Z	SanguineChameleon	Connecting Supertrees (IOI20_supertrees)	C++17	40 / 100	169 ms	28028 KB

supertrees

#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;

const int maxn = 1e3 + 20;
int cnt[maxn][maxn];
vector<vector<int>> res;
bool flag[maxn];
int n;

void add_edge(int u, int v) {
	res[u][v] = true;
	res[v][u] = true;
}

bool solve(vector<int> comp) {
	for (auto u: comp) {
		for (auto v: comp) {
			if (cnt[u][v] == 0) {
				return false;
			}
		}
	}
	for (int i = 0; i < (int)comp.size() - 1; i++) {
		add_edge(comp[i], comp[i + 1]);
	}
	for (auto i: comp) {
		flag[i] = false;
	}
	vector<vector<int>> chains;
	for (auto i: comp) {
		if (!flag[i]) {
			flag[i] = true;
			vector<int> chain = {i};
			int pt = 0;
			int sz = 1;
			while (pt < sz) {
				int u = chain[pt++];
				for (int v = 0; v < n; v++) {
					if (!flag[v] && cnt[u][v] == 1) {
						flag[v] = true;
						chain.push_back(v);
						sz++;
					} 
				}
			}
			for (auto u: chain) {
				for (auto v: chain) {
					if (cnt[u][v] != 1) {
						return false;
					}
				}
			}
			chains.push_back(chain);
		}
	}
	int sz = chains.size();
	if (sz == 2) {
		return false;
	}
	if (sz >= 3) {
		for (int i = 0; i < sz; i++) {
			add_edge(chains[i].back(), chains[(i + 1) % sz].back());
		}
	}
	return true;
}

int construct(vector<vector<int>> _cnt) {
	n = _cnt.size();
	res.resize(n, vector<int>(n, 0));
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			cnt[i][j] = _cnt[i][j];
			if (cnt[i][j] == 3) {
				return 0;
			}
		}
	}
	for (int i = 0; i < n; i++) {
		if (!flag[i]) {
			flag[i] = true;
			vector<int> comp = {i};
			int pt = 0;
			int sz = 1;
			while (pt < sz) {
				int u = comp[pt++];
				for (int v = 0; v < n; v++) {
					if (!flag[v] && cnt[u][v] > 0) {
						flag[v] = true;
						comp.push_back(v);
						sz++;
					} 
				}
			}
			if (!solve(comp)) {
				return 0;
			}
		}
	}
	build(res);
	return 1;
}

Subtask #1
11.0 / 11.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	7 ms	2004 KB	Output is correct
7	Correct	159 ms	25932 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	7 ms	2004 KB	Output is correct
7	Correct	159 ms	25932 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	7 ms	1876 KB	Output is correct
13	Correct	155 ms	26016 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	3 ms	1492 KB	Output is correct
17	Correct	65 ms	16148 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	39 ms	7784 KB	Output is correct
21	Correct	158 ms	25932 KB	Output is correct
22	Correct	169 ms	25996 KB	Output is correct
23	Correct	159 ms	26012 KB	Output is correct
24	Correct	159 ms	26004 KB	Output is correct
25	Correct	82 ms	16008 KB	Output is correct
26	Correct	63 ms	16008 KB	Output is correct
27	Correct	159 ms	25932 KB	Output is correct
28	Correct	159 ms	25992 KB	Output is correct

Subtask #3
19.0 / 19.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	1 ms	308 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	7 ms	1984 KB	Output is correct
9	Correct	157 ms	28028 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	308 KB	Output is correct
12	Correct	7 ms	2004 KB	Output is correct
13	Correct	154 ms	27904 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	308 KB	Output is correct
16	Correct	3 ms	1576 KB	Output is correct
17	Correct	65 ms	18048 KB	Output is correct
18	Correct	1 ms	304 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	45 ms	8248 KB	Output is correct
22	Correct	156 ms	27980 KB	Output is correct
23	Correct	158 ms	27956 KB	Output is correct
24	Correct	158 ms	27996 KB	Output is correct
25	Correct	76 ms	18092 KB	Output is correct
26	Correct	62 ms	18056 KB	Output is correct
27	Correct	167 ms	27928 KB	Output is correct
28	Correct	162 ms	28000 KB	Output is correct
29	Correct	76 ms	18048 KB	Output is correct

Subtask #4
0 / 35.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	39 ms	8176 KB	Output is correct
5	Correct	156 ms	26668 KB	Output is correct
6	Correct	159 ms	26828 KB	Output is correct
7	Correct	159 ms	26612 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	39 ms	8140 KB	Output is correct
10	Correct	156 ms	26616 KB	Output is correct
11	Correct	156 ms	26620 KB	Output is correct
12	Correct	165 ms	26680 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Incorrect	1 ms	340 KB	Too many ways to get from 0 to 4, should be 1 found no less than 2
16	Halted	0 ms	0 KB	-

Subtask #5
0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	7 ms	2004 KB	Output is correct
7	Correct	159 ms	25932 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	7 ms	1876 KB	Output is correct
13	Correct	155 ms	26016 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	3 ms	1492 KB	Output is correct
17	Correct	65 ms	16148 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	39 ms	7784 KB	Output is correct
21	Correct	158 ms	25932 KB	Output is correct
22	Correct	169 ms	25996 KB	Output is correct
23	Correct	159 ms	26012 KB	Output is correct
24	Correct	159 ms	26004 KB	Output is correct
25	Correct	82 ms	16008 KB	Output is correct
26	Correct	63 ms	16008 KB	Output is correct
27	Correct	159 ms	25932 KB	Output is correct
28	Correct	159 ms	25992 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct
30	Correct	0 ms	212 KB	Output is correct
31	Correct	0 ms	212 KB	Output is correct
32	Correct	0 ms	212 KB	Output is correct
33	Correct	1 ms	308 KB	Output is correct
34	Correct	1 ms	212 KB	Output is correct
35	Correct	0 ms	340 KB	Output is correct
36	Correct	7 ms	1984 KB	Output is correct
37	Correct	157 ms	28028 KB	Output is correct
38	Correct	0 ms	212 KB	Output is correct
39	Correct	0 ms	308 KB	Output is correct
40	Correct	7 ms	2004 KB	Output is correct
41	Correct	154 ms	27904 KB	Output is correct
42	Correct	1 ms	212 KB	Output is correct
43	Correct	0 ms	308 KB	Output is correct
44	Correct	3 ms	1576 KB	Output is correct
45	Correct	65 ms	18048 KB	Output is correct
46	Correct	1 ms	304 KB	Output is correct
47	Correct	0 ms	212 KB	Output is correct
48	Correct	1 ms	212 KB	Output is correct
49	Correct	45 ms	8248 KB	Output is correct
50	Correct	156 ms	27980 KB	Output is correct
51	Correct	158 ms	27956 KB	Output is correct
52	Correct	158 ms	27996 KB	Output is correct
53	Correct	76 ms	18092 KB	Output is correct
54	Correct	62 ms	18056 KB	Output is correct
55	Correct	167 ms	27928 KB	Output is correct
56	Correct	162 ms	28000 KB	Output is correct
57	Correct	76 ms	18048 KB	Output is correct
58	Correct	1 ms	308 KB	Output is correct
59	Correct	1 ms	340 KB	Output is correct
60	Correct	5 ms	1620 KB	Output is correct
61	Correct	64 ms	18060 KB	Output is correct
62	Correct	0 ms	212 KB	Output is correct
63	Correct	1 ms	340 KB	Output is correct
64	Correct	1 ms	340 KB	Output is correct
65	Incorrect	39 ms	8212 KB	Too many ways to get from 1 to 269, should be 1 found no less than 2
66	Halted	0 ms	0 KB	-

Subtask #6
0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	7 ms	2004 KB	Output is correct
7	Correct	159 ms	25932 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	7 ms	1876 KB	Output is correct
13	Correct	155 ms	26016 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	3 ms	1492 KB	Output is correct
17	Correct	65 ms	16148 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	39 ms	7784 KB	Output is correct
21	Correct	158 ms	25932 KB	Output is correct
22	Correct	169 ms	25996 KB	Output is correct
23	Correct	159 ms	26012 KB	Output is correct
24	Correct	159 ms	26004 KB	Output is correct
25	Correct	82 ms	16008 KB	Output is correct
26	Correct	63 ms	16008 KB	Output is correct
27	Correct	159 ms	25932 KB	Output is correct
28	Correct	159 ms	25992 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct
30	Correct	0 ms	212 KB	Output is correct
31	Correct	0 ms	212 KB	Output is correct
32	Correct	0 ms	212 KB	Output is correct
33	Correct	1 ms	308 KB	Output is correct
34	Correct	1 ms	212 KB	Output is correct
35	Correct	0 ms	340 KB	Output is correct
36	Correct	7 ms	1984 KB	Output is correct
37	Correct	157 ms	28028 KB	Output is correct
38	Correct	0 ms	212 KB	Output is correct
39	Correct	0 ms	308 KB	Output is correct
40	Correct	7 ms	2004 KB	Output is correct
41	Correct	154 ms	27904 KB	Output is correct
42	Correct	1 ms	212 KB	Output is correct
43	Correct	0 ms	308 KB	Output is correct
44	Correct	3 ms	1576 KB	Output is correct
45	Correct	65 ms	18048 KB	Output is correct
46	Correct	1 ms	304 KB	Output is correct
47	Correct	0 ms	212 KB	Output is correct
48	Correct	1 ms	212 KB	Output is correct
49	Correct	45 ms	8248 KB	Output is correct
50	Correct	156 ms	27980 KB	Output is correct
51	Correct	158 ms	27956 KB	Output is correct
52	Correct	158 ms	27996 KB	Output is correct
53	Correct	76 ms	18092 KB	Output is correct
54	Correct	62 ms	18056 KB	Output is correct
55	Correct	167 ms	27928 KB	Output is correct
56	Correct	162 ms	28000 KB	Output is correct
57	Correct	76 ms	18048 KB	Output is correct
58	Correct	0 ms	212 KB	Output is correct
59	Correct	0 ms	212 KB	Output is correct
60	Correct	0 ms	212 KB	Output is correct
61	Correct	39 ms	8176 KB	Output is correct
62	Correct	156 ms	26668 KB	Output is correct
63	Correct	159 ms	26828 KB	Output is correct
64	Correct	159 ms	26612 KB	Output is correct
65	Correct	1 ms	212 KB	Output is correct
66	Correct	39 ms	8140 KB	Output is correct
67	Correct	156 ms	26616 KB	Output is correct
68	Correct	156 ms	26620 KB	Output is correct
69	Correct	165 ms	26680 KB	Output is correct
70	Correct	1 ms	212 KB	Output is correct
71	Correct	0 ms	340 KB	Output is correct
72	Incorrect	1 ms	340 KB	Too many ways to get from 0 to 4, should be 1 found no less than 2
73	Halted	0 ms	0 KB	-

Submission #770826

Compilation message

Subtask #1 11.0 / 11.0

Subtask #2 10.0 / 10.0

Subtask #3 19.0 / 19.0

Subtask #4 0 / 35.0

Subtask #5 0 / 21.0

Subtask #6 0 / 4.0

Subtask #1
11.0 / 11.0

Subtask #2
10.0 / 10.0

Subtask #3
19.0 / 19.0

Subtask #4
0 / 35.0

Subtask #5
0 / 21.0

Subtask #6
0 / 4.0