oj.uz

Submission #841036

# Submission time Handle Problem Language Result Execution time Memory
841036 2023-09-01T06:23:12 Z jhwest2 Longest Trip (IOI23_longesttrip) C++17
70 / 100
 25 ms 428 KB 
#include "longesttrip.h"
#include <bits/stdc++.h>
using namespace std;

pair<int, int> find_edge(vector<int> p1, vector<int> p2) {
	if (p1.size() == 1 && p2.size() == 1) {
		return {p1[0], p2[0]};
	}
	if (p1.size() == 1) {
		int m = (int)p2.size() / 2;
		vector<int> left = vector<int>(p2.begin(), p2.begin() + m);
		vector<int> right = vector<int>(p2.begin() + m, p2.end());
		if (are_connected(p1, left)) 
			return find_edge(p1, left);
		else 
			return find_edge(p1, right);
	}
	else {
		int m = (int)p1.size() / 2;
		vector<int> left = vector<int>(p1.begin(), p1.begin() + m);
		vector<int> right = vector<int>(p1.begin() + m, p1.end());
		if (are_connected(left, p2))
			return find_edge(left, p2);
		else
			return find_edge(right, p2);
	}
}
vector<int> longest_trip(int N, int D)
{
	if (D == 3) {
		vector<int> res(N);
		iota(res.begin(), res.end(), 0);
		return res;
	}
	if (D == 2) {
		deque<int> dq = {0};
		vector<bool> chk(N);
		for (int i = 1; i < N; i++) {
			if (are_connected({0}, {i})) {
				dq.push_back(i);
				chk[i] = true;
				break;
			}
		}
		for (int i = 1; i < N; i++) {
			if (chk[i]) continue;
			if (are_connected({i}, {dq.back()}))
				dq.push_back(i);
			else
				dq.push_front(i);
		}
		return vector<int>(dq.begin(), dq.end());
	}
	vector<int> path = {0};
	vector<int> clique;
	int p = 1;
	while (true) {
		if (!clique.empty() && are_connected({path.back()}, clique)) {
			int s = -1;
			if (clique.size() == 1) {
				s = clique[0];
			}
			else {
				s = find_edge({path.back()}, clique).second;
			}
			path.push_back(s);
			for (int x : clique) if (s != x) {
				path.push_back(x);
			}
			clique.clear();
		}
		else {
			while (p < N) {
				if (p == N - 1) {
					if (!are_connected({path.back()}, {p})) {
						clique.push_back(p++);
					}
					else break;
				}
				else {
					if (!are_connected({path.back()}, {p, p + 1})) {
						clique.push_back(p++);
						clique.push_back(p++);
					}
					else {
						if (!are_connected({path.back()}, {p}))
							clique.push_back(p++);
						
						break;
					}
				}
			}
			if (p == N) break;
			path.push_back(p++);
		}
	}
	if (clique.empty() || !are_connected(path, clique)) {
		if (path.size() < clique.size())
			return clique;
		else
			return path;
	}
	if (!clique.empty() && are_connected({path[0]}, clique)) {
		auto [u, v] = find_edge({path[0]}, clique);
		vector<int> ans;
		for (int x : clique) if (x != v) ans.push_back(x);
		ans.push_back(v);
		for (int x : path) ans.push_back(x);
		return ans;
	}
	auto [u, v] = find_edge(path, clique);
	vector<int> ans;
	for (int x : clique) if (x != v) ans.push_back(x);
	ans.push_back(v);
	p = find(path.begin(), path.end(), u) - path.begin();
	for (int i = p; i < path.size(); i++) ans.push_back(path[i]);
	for (int i = 0; i < p; i++) ans.push_back(path[i]);
	return ans;
}

Compilation message

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:116:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  116 |  for (int i = p; i < path.size(); i++) ans.push_back(path[i]);
      |                  ~~^~~~~~~~~~~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 5 ms 208 KB Output is correct

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 208 KB Output is correct
2 Correct 8 ms 208 KB Output is correct
3 Correct 9 ms 208 KB Output is correct
4 Correct 4 ms 208 KB Output is correct
5 Correct 7 ms 304 KB Output is correct
6 Correct 10 ms 208 KB Output is correct
7 Correct 10 ms 208 KB Output is correct
8 Correct 10 ms 208 KB Output is correct
9 Correct 8 ms 208 KB Output is correct
10 Correct 7 ms 208 KB Output is correct
11 Correct 7 ms 208 KB Output is correct
12 Correct 7 ms 208 KB Output is correct
13 Correct 11 ms 292 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 208 KB Output is correct
2 Correct 13 ms 208 KB Output is correct
3 Correct 18 ms 208 KB Output is correct
4 Correct 17 ms 208 KB Output is correct
5 Correct 8 ms 208 KB Output is correct
6 Correct 7 ms 208 KB Output is correct
7 Correct 11 ms 208 KB Output is correct
8 Correct 17 ms 208 KB Output is correct
9 Correct 11 ms 208 KB Output is correct
10 Correct 18 ms 208 KB Output is correct
11 Correct 12 ms 300 KB Output is correct
12 Correct 9 ms 208 KB Output is correct
13 Correct 10 ms 208 KB Output is correct
14 Correct 10 ms 208 KB Output is correct
15 Correct 13 ms 208 KB Output is correct
16 Correct 13 ms 208 KB Output is correct
17 Correct 19 ms 208 KB Output is correct
18 Correct 18 ms 296 KB Output is correct
19 Correct 15 ms 208 KB Output is correct
20 Correct 12 ms 208 KB Output is correct
21 Correct 11 ms 208 KB Output is correct
22 Correct 18 ms 300 KB Output is correct
23 Correct 17 ms 208 KB Output is correct
24 Correct 11 ms 208 KB Output is correct
25 Correct 9 ms 208 KB Output is correct
26 Correct 6 ms 208 KB Output is correct
27 Correct 14 ms 208 KB Output is correct
28 Correct 16 ms 208 KB Output is correct
29 Correct 15 ms 208 KB Output is correct
30 Correct 15 ms 208 KB Output is correct
31 Correct 20 ms 336 KB Output is correct
32 Correct 11 ms 208 KB Output is correct
33 Correct 23 ms 208 KB Output is correct
34 Correct 25 ms 208 KB Output is correct
35 Correct 16 ms 208 KB Output is correct
36 Correct 20 ms 300 KB Output is correct
37 Correct 19 ms 208 KB Output is correct
38 Correct 19 ms 300 KB Output is correct
39 Correct 21 ms 208 KB Output is correct
40 Correct 14 ms 292 KB Output is correct
41 Correct 12 ms 208 KB Output is correct
42 Correct 18 ms 308 KB Output is correct
43 Correct 17 ms 428 KB Output is correct
44 Correct 18 ms 208 KB Output is correct
45 Correct 16 ms 208 KB Output is correct
46 Correct 15 ms 208 KB Output is correct
47 Correct 14 ms 208 KB Output is correct
48 Correct 17 ms 208 KB Output is correct
49 Correct 13 ms 208 KB Output is correct
50 Correct 13 ms 300 KB Output is correct
51 Correct 16 ms 208 KB Output is correct
52 Correct 16 ms 296 KB Output is correct
53 Correct 14 ms 208 KB Output is correct
54 Correct 15 ms 304 KB Output is correct
55 Correct 17 ms 208 KB Output is correct
56 Correct 14 ms 208 KB Output is correct
57 Correct 14 ms 304 KB Output is correct
58 Correct 18 ms 316 KB Output is correct
59 Correct 19 ms 304 KB Output is correct
60 Correct 18 ms 292 KB Output is correct
61 Correct 12 ms 208 KB Output is correct
62 Correct 14 ms 208 KB Output is correct
63 Correct 13 ms 288 KB Output is correct
64 Correct 13 ms 312 KB Output is correct

Subtask #4
30.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 208 KB Output is correct
2 Correct 12 ms 208 KB Output is correct
3 Correct 12 ms 208 KB Output is correct
4 Correct 19 ms 208 KB Output is correct
5 Partially correct 12 ms 208 KB Output is partially correct
6 Correct 9 ms 208 KB Output is correct
7 Correct 12 ms 208 KB Output is correct
8 Correct 12 ms 208 KB Output is correct
9 Correct 18 ms 208 KB Output is correct
10 Partially correct 13 ms 208 KB Output is partially correct
11 Partially correct 12 ms 208 KB Output is partially correct
12 Partially correct 17 ms 208 KB Output is partially correct
13 Partially correct 14 ms 300 KB Output is partially correct
14 Correct 10 ms 208 KB Output is correct
15 Correct 7 ms 208 KB Output is correct
16 Correct 15 ms 208 KB Output is correct
17 Correct 14 ms 208 KB Output is correct
18 Correct 11 ms 296 KB Output is correct
19 Correct 12 ms 304 KB Output is correct
20 Correct 12 ms 208 KB Output is correct
21 Correct 13 ms 208 KB Output is correct
22 Correct 10 ms 208 KB Output is correct
23 Correct 11 ms 208 KB Output is correct
24 Correct 13 ms 208 KB Output is correct
25 Correct 13 ms 208 KB Output is correct
26 Correct 22 ms 208 KB Output is correct
27 Correct 13 ms 208 KB Output is correct
28 Correct 10 ms 208 KB Output is correct
29 Correct 19 ms 208 KB Output is correct
30 Correct 19 ms 208 KB Output is correct
31 Correct 11 ms 208 KB Output is correct
32 Correct 12 ms 208 KB Output is correct
33 Correct 9 ms 208 KB Output is correct
34 Correct 14 ms 208 KB Output is correct
35 Correct 17 ms 208 KB Output is correct
36 Correct 10 ms 208 KB Output is correct
37 Correct 13 ms 296 KB Output is correct
38 Correct 11 ms 208 KB Output is correct
39 Correct 13 ms 220 KB Output is correct
40 Correct 13 ms 208 KB Output is correct
41 Correct 14 ms 208 KB Output is correct
42 Correct 14 ms 304 KB Output is correct
43 Partially correct 12 ms 208 KB Output is partially correct
44 Partially correct 13 ms 208 KB Output is partially correct
45 Partially correct 11 ms 292 KB Output is partially correct
46 Partially correct 15 ms 292 KB Output is partially correct
47 Partially correct 18 ms 208 KB Output is partially correct
48 Partially correct 12 ms 300 KB Output is partially correct
49 Partially correct 16 ms 208 KB Output is partially correct
50 Partially correct 20 ms 208 KB Output is partially correct
51 Partially correct 18 ms 308 KB Output is partially correct
52 Partially correct 14 ms 304 KB Output is partially correct
53 Partially correct 13 ms 208 KB Output is partially correct
54 Partially correct 13 ms 292 KB Output is partially correct
55 Partially correct 13 ms 208 KB Output is partially correct
56 Partially correct 18 ms 208 KB Output is partially correct
57 Partially correct 13 ms 208 KB Output is partially correct
58 Partially correct 12 ms 312 KB Output is partially correct
59 Partially correct 13 ms 316 KB Output is partially correct
60 Partially correct 13 ms 308 KB Output is partially correct
61 Partially correct 13 ms 296 KB Output is partially correct
62 Partially correct 19 ms 208 KB Output is partially correct
63 Partially correct 13 ms 304 KB Output is partially correct
64 Partially correct 15 ms 208 KB Output is partially correct
65 Partially correct 10 ms 316 KB Output is partially correct
66 Partially correct 14 ms 304 KB Output is partially correct
67 Partially correct 12 ms 312 KB Output is partially correct
68 Partially correct 10 ms 304 KB Output is partially correct
69 Partially correct 11 ms 300 KB Output is partially correct
70 Partially correct 15 ms 292 KB Output is partially correct
71 Partially correct 20 ms 208 KB Output is partially correct
72 Partially correct 15 ms 340 KB Output is partially correct
73 Partially correct 11 ms 304 KB Output is partially correct
74 Partially correct 13 ms 308 KB Output is partially correct
75 Partially correct 18 ms 336 KB Output is partially correct
76 Partially correct 12 ms 208 KB Output is partially correct
77 Partially correct 21 ms 208 KB Output is partially correct
78 Partially correct 10 ms 324 KB Output is partially correct
79 Partially correct 16 ms 424 KB Output is partially correct
80 Partially correct 14 ms 304 KB Output is partially correct
81 Partially correct 14 ms 208 KB Output is partially correct
82 Partially correct 14 ms 300 KB Output is partially correct