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Submission #767692

# Submission time Handle Problem Language Result Execution time Memory
767692 2023-06-27T04:46:47 Z SanguineChameleon Simurgh (IOI17_simurgh) C++17
51 / 100
 98 ms 3784 KB 
#include "simurgh.h"
#include <bits/stdc++.h>
using namespace std;

const int maxn = 5e2 + 20;
const int maxm = maxn * maxn / 2;
vector<pair<int, int>> adj[maxn];
bool tree[maxm];
int flag[maxm];
int comp[maxn];

void dfs1(int u) {
	flag[u] = true;
	for (auto e: adj[u]) {
		int v = e.first;
		int id = e.second;
		if (!flag[v]) {
			tree[id] = true;
			dfs1(v);
		}
	}
}

void dfs2(int u, int p) {
	comp[u] = 1;
	for (auto e: adj[u]) {
		int v = e.first;
		int id = e.second;
		if (tree[id] && v != p) {
			dfs2(v, u);
		}
	}
}

vector<int> find_roads(int n, vector<int> u, vector<int> v) {
	int m = u.size();
	for (int i = 0; i < m; i++) {
		adj[u[i]].emplace_back(v[i], i);
		adj[v[i]].emplace_back(u[i], i);
	}
	dfs1(0);
	for (int i = 0; i < m; i++) {
		flag[i] = -1;
	}
	vector<int> res;
	for (int i = 0; i < m; i++) {
		if (tree[i]) {
			res.push_back(i);
		}
	}
	while (true) {
		for (int i = 0; i < n - 1; i++) {
			if (flag[res[i]] == -1) {
				tree[res[i]] = false;
				res.erase(res.begin() + i);
				break;
			}
		}
		if ((int)res.size() == n - 1) {
			break;
		}
		for (int i = 0; i < n; i++) {
			comp[i] = 0;
		}
		dfs2(0, -1);
		vector<pair<int, int>> cnt;
		int good = -1;
		for (int i = 0; i < m; i++) {
			if (comp[u[i]] != comp[v[i]] && flag[i] == 1) {
				good = i;
				break;
			}
		}
		if (good == -1) {
			int mx = -1;
			for (int i = 0; i < m; i++) {
				if (comp[u[i]] != comp[v[i]] && flag[i] == -1) {
					res.push_back(i);
					cnt.emplace_back(count_common_roads(res), i);
					res.pop_back();
					mx = max(mx, cnt.back().first);
					if ((int)cnt.size() >= 2 && cnt.back().first != cnt.end()[-2].first) {
						break;
					}
				}
			}
			for (auto p: cnt) {
				if (p.first == mx) {
					good = p.second;
					flag[p.second] = 1;
				}
				else {
					flag[p.second] = 0;
				}
			}
		}
		tree[good] = true;
		res.push_back(good);
	}
	return res;
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB correct
2 Correct 0 ms 212 KB correct
3 Correct 0 ms 212 KB correct
4 Correct 0 ms 212 KB correct
5 Correct 0 ms 212 KB correct
6 Correct 0 ms 212 KB correct
7 Correct 0 ms 212 KB correct
8 Correct 1 ms 212 KB correct
9 Correct 0 ms 212 KB correct
10 Correct 0 ms 212 KB correct
11 Correct 0 ms 212 KB correct
12 Correct 0 ms 212 KB correct
13 Correct 1 ms 212 KB correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB correct
2 Correct 0 ms 212 KB correct
3 Correct 0 ms 212 KB correct
4 Correct 0 ms 212 KB correct
5 Correct 0 ms 212 KB correct
6 Correct 0 ms 212 KB correct
7 Correct 0 ms 212 KB correct
8 Correct 1 ms 212 KB correct
9 Correct 0 ms 212 KB correct
10 Correct 0 ms 212 KB correct
11 Correct 0 ms 212 KB correct
12 Correct 0 ms 212 KB correct
13 Correct 1 ms 212 KB correct
14 Correct 1 ms 340 KB correct
15 Correct 1 ms 340 KB correct
16 Correct 1 ms 340 KB correct
17 Correct 2 ms 340 KB correct
18 Correct 1 ms 340 KB correct
19 Correct 1 ms 340 KB correct
20 Correct 1 ms 340 KB correct
21 Correct 1 ms 340 KB correct
22 Correct 1 ms 340 KB correct
23 Correct 1 ms 340 KB correct
24 Correct 1 ms 340 KB correct
25 Correct 1 ms 212 KB correct
26 Correct 1 ms 340 KB correct
27 Correct 1 ms 340 KB correct
28 Correct 1 ms 340 KB correct
29 Correct 1 ms 340 KB correct
30 Correct 1 ms 340 KB correct
31 Correct 1 ms 340 KB correct
32 Correct 1 ms 340 KB correct
33 Correct 1 ms 340 KB correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB correct
2 Correct 0 ms 212 KB correct
3 Correct 0 ms 212 KB correct
4 Correct 0 ms 212 KB correct
5 Correct 0 ms 212 KB correct
6 Correct 0 ms 212 KB correct
7 Correct 0 ms 212 KB correct
8 Correct 1 ms 212 KB correct
9 Correct 0 ms 212 KB correct
10 Correct 0 ms 212 KB correct
11 Correct 0 ms 212 KB correct
12 Correct 0 ms 212 KB correct
13 Correct 1 ms 212 KB correct
14 Correct 1 ms 340 KB correct
15 Correct 1 ms 340 KB correct
16 Correct 1 ms 340 KB correct
17 Correct 2 ms 340 KB correct
18 Correct 1 ms 340 KB correct
19 Correct 1 ms 340 KB correct
20 Correct 1 ms 340 KB correct
21 Correct 1 ms 340 KB correct
22 Correct 1 ms 340 KB correct
23 Correct 1 ms 340 KB correct
24 Correct 1 ms 340 KB correct
25 Correct 1 ms 212 KB correct
26 Correct 1 ms 340 KB correct
27 Correct 1 ms 340 KB correct
28 Correct 1 ms 340 KB correct
29 Correct 1 ms 340 KB correct
30 Correct 1 ms 340 KB correct
31 Correct 1 ms 340 KB correct
32 Correct 1 ms 340 KB correct
33 Correct 1 ms 340 KB correct
34 Correct 98 ms 1492 KB correct
35 Correct 88 ms 1484 KB correct
36 Correct 60 ms 1292 KB correct
37 Correct 5 ms 340 KB correct
38 Correct 91 ms 1488 KB correct
39 Correct 76 ms 1404 KB correct
40 Correct 58 ms 1304 KB correct
41 Correct 69 ms 1492 KB correct
42 Correct 68 ms 1436 KB correct
43 Correct 14 ms 1076 KB correct
44 Correct 10 ms 860 KB correct
45 Correct 11 ms 852 KB correct
46 Correct 9 ms 724 KB correct
47 Correct 5 ms 468 KB correct
48 Correct 2 ms 340 KB correct
49 Correct 3 ms 340 KB correct
50 Correct 5 ms 468 KB correct
51 Correct 14 ms 852 KB correct
52 Correct 9 ms 848 KB correct
53 Correct 8 ms 724 KB correct
54 Correct 18 ms 1120 KB correct
55 Correct 11 ms 852 KB correct
56 Correct 11 ms 852 KB correct
57 Correct 11 ms 924 KB correct

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB correct
2 Correct 0 ms 212 KB correct
3 Incorrect 71 ms 3784 KB WA in grader: NO
4 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB correct
2 Correct 0 ms 212 KB correct
3 Correct 0 ms 212 KB correct
4 Correct 0 ms 212 KB correct
5 Correct 0 ms 212 KB correct
6 Correct 0 ms 212 KB correct
7 Correct 0 ms 212 KB correct
8 Correct 1 ms 212 KB correct
9 Correct 0 ms 212 KB correct
10 Correct 0 ms 212 KB correct
11 Correct 0 ms 212 KB correct
12 Correct 0 ms 212 KB correct
13 Correct 1 ms 212 KB correct
14 Correct 1 ms 340 KB correct
15 Correct 1 ms 340 KB correct
16 Correct 1 ms 340 KB correct
17 Correct 2 ms 340 KB correct
18 Correct 1 ms 340 KB correct
19 Correct 1 ms 340 KB correct
20 Correct 1 ms 340 KB correct
21 Correct 1 ms 340 KB correct
22 Correct 1 ms 340 KB correct
23 Correct 1 ms 340 KB correct
24 Correct 1 ms 340 KB correct
25 Correct 1 ms 212 KB correct
26 Correct 1 ms 340 KB correct
27 Correct 1 ms 340 KB correct
28 Correct 1 ms 340 KB correct
29 Correct 1 ms 340 KB correct
30 Correct 1 ms 340 KB correct
31 Correct 1 ms 340 KB correct
32 Correct 1 ms 340 KB correct
33 Correct 1 ms 340 KB correct
34 Correct 98 ms 1492 KB correct
35 Correct 88 ms 1484 KB correct
36 Correct 60 ms 1292 KB correct
37 Correct 5 ms 340 KB correct
38 Correct 91 ms 1488 KB correct
39 Correct 76 ms 1404 KB correct
40 Correct 58 ms 1304 KB correct
41 Correct 69 ms 1492 KB correct
42 Correct 68 ms 1436 KB correct
43 Correct 14 ms 1076 KB correct
44 Correct 10 ms 860 KB correct
45 Correct 11 ms 852 KB correct
46 Correct 9 ms 724 KB correct
47 Correct 5 ms 468 KB correct
48 Correct 2 ms 340 KB correct
49 Correct 3 ms 340 KB correct
50 Correct 5 ms 468 KB correct
51 Correct 14 ms 852 KB correct
52 Correct 9 ms 848 KB correct
53 Correct 8 ms 724 KB correct
54 Correct 18 ms 1120 KB correct
55 Correct 11 ms 852 KB correct
56 Correct 11 ms 852 KB correct
57 Correct 11 ms 924 KB correct
58 Correct 0 ms 212 KB correct
59 Correct 0 ms 212 KB correct
60 Incorrect 71 ms 3784 KB WA in grader: NO
61 Halted 0 ms 0 KB -