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Submission #1080883

# Submission time Handle Problem Language Result Execution time Memory
1080883 2024-08-29T15:40:58 Z asdasdqwer Longest Trip (IOI23_longesttrip) C++17
40 / 100
 936 ms 1884 KB 
#include "longesttrip.h"

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

std::vector<int> longest_trip(int N, int D) {
    vector<vector<int>> g(N);
    if (D == 3) {
        vector<int> v;
        for (int i=0;i<N;i++) {
            v.push_back(i);
        }
        return v;
    }

    for (int i=0;i<N;i++) {
        for (int j=i+1;j<N;j++) {
            if (are_connected({i}, {j})) {
                g[i].push_back(j);
                g[j].push_back(i);
            }
        }
    }

    int tries = 20;
    mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
    vector<int> lng;
    for (int i=0;i<tries;i++) {
        vector<int> tmp;
        vector<bool> vis(N, false);
        function<void(int)> dfs=[&](int node) {
            vis[node] = true;
            tmp.push_back(node);

            vector<int> suf;
            for (int j=0;j<g[node].size();j++)suf.push_back(j);
            shuffle(suf.begin(), suf.end(), rng);

            for (int x:suf) {
                if (!vis[g[node][x]]) {
                    dfs(g[node][x]);
                    break;
                }
            }
        };

        dfs(uniform_int_distribution<int>(0, N-1)(rng));

        if (lng.size() < tmp.size()) {
            lng = tmp;
        }
    }

    return lng;
}

Compilation message

longesttrip.cpp: In lambda function:
longesttrip.cpp:36:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |             for (int j=0;j<g[node].size();j++)suf.push_back(j);
      |                          ~^~~~~~~~~~~~~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 205 ms 1884 KB Output is correct

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 344 KB Output is correct
2 Correct 22 ms 344 KB Output is correct
3 Correct 161 ms 452 KB Output is correct
4 Correct 434 ms 748 KB Output is correct
5 Correct 920 ms 1056 KB Output is correct
6 Correct 9 ms 344 KB Output is correct
7 Correct 26 ms 344 KB Output is correct
8 Correct 171 ms 472 KB Output is correct
9 Correct 329 ms 556 KB Output is correct
10 Correct 936 ms 1224 KB Output is correct
11 Correct 854 ms 1308 KB Output is correct
12 Correct 901 ms 1144 KB Output is correct
13 Correct 841 ms 1012 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 344 KB Output is correct
2 Correct 30 ms 344 KB Output is correct
3 Correct 183 ms 344 KB Output is correct
4 Correct 427 ms 936 KB Output is correct
5 Correct 833 ms 1376 KB Output is correct
6 Correct 12 ms 344 KB Output is correct
7 Correct 28 ms 344 KB Output is correct
8 Correct 180 ms 460 KB Output is correct
9 Correct 365 ms 600 KB Output is correct
10 Correct 847 ms 1212 KB Output is correct
11 Correct 823 ms 1004 KB Output is correct
12 Correct 910 ms 1136 KB Output is correct
13 Correct 894 ms 1220 KB Output is correct
14 Correct 9 ms 344 KB Output is correct
15 Correct 13 ms 344 KB Output is correct
16 Correct 43 ms 344 KB Output is correct
17 Correct 111 ms 424 KB Output is correct
18 Correct 164 ms 460 KB Output is correct
19 Correct 338 ms 992 KB Output is correct
20 Correct 353 ms 560 KB Output is correct
21 Correct 897 ms 1296 KB Output is correct
22 Correct 864 ms 1572 KB Output is correct
23 Correct 855 ms 1120 KB Output is correct
24 Correct 862 ms 1016 KB Output is correct
25 Correct 11 ms 344 KB Output is correct
26 Correct 11 ms 344 KB Output is correct
27 Correct 22 ms 344 KB Output is correct
28 Correct 25 ms 344 KB Output is correct
29 Correct 30 ms 344 KB Output is correct
30 Correct 205 ms 468 KB Output is correct
31 Correct 193 ms 852 KB Output is correct
32 Correct 196 ms 600 KB Output is correct
33 Correct 340 ms 344 KB Output is correct
34 Correct 329 ms 600 KB Output is correct
35 Correct 370 ms 528 KB Output is correct
36 Correct 897 ms 1072 KB Output is correct
37 Correct 826 ms 1084 KB Output is correct
38 Correct 845 ms 1104 KB Output is correct
39 Correct 816 ms 1036 KB Output is correct
40 Correct 843 ms 1132 KB Output is correct
41 Correct 841 ms 952 KB Output is correct
42 Correct 810 ms 800 KB Output is correct
43 Correct 822 ms 1252 KB Output is correct
44 Correct 898 ms 792 KB Output is correct
45 Correct 15 ms 344 KB Output is correct
46 Correct 16 ms 344 KB Output is correct
47 Correct 27 ms 344 KB Output is correct
48 Correct 21 ms 344 KB Output is correct
49 Correct 26 ms 344 KB Output is correct
50 Correct 226 ms 468 KB Output is correct
51 Correct 205 ms 688 KB Output is correct
52 Correct 183 ms 600 KB Output is correct
53 Correct 345 ms 848 KB Output is correct
54 Correct 341 ms 692 KB Output is correct
55 Correct 309 ms 756 KB Output is correct
56 Correct 901 ms 1104 KB Output is correct
57 Correct 840 ms 1168 KB Output is correct
58 Correct 907 ms 1288 KB Output is correct
59 Correct 848 ms 1108 KB Output is correct
60 Correct 856 ms 1272 KB Output is correct
61 Correct 823 ms 740 KB Output is correct
62 Correct 837 ms 860 KB Output is correct
63 Correct 875 ms 1304 KB Output is correct
64 Correct 878 ms 1100 KB Output is correct

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 340 KB Output is correct
2 Correct 38 ms 344 KB Output is correct
3 Partially correct 147 ms 344 KB Output is partially correct
4 Partially correct 430 ms 820 KB Output is partially correct
5 Partially correct 822 ms 1048 KB Output is partially correct
6 Correct 14 ms 344 KB Output is correct
7 Correct 25 ms 344 KB Output is correct
8 Partially correct 144 ms 476 KB Output is partially correct
9 Partially correct 252 ms 720 KB Output is partially correct
10 Partially correct 735 ms 1008 KB Output is partially correct
11 Partially correct 810 ms 1008 KB Output is partially correct
12 Partially correct 857 ms 1028 KB Output is partially correct
13 Partially correct 846 ms 1388 KB Output is partially correct
14 Correct 12 ms 344 KB Output is correct
15 Correct 18 ms 344 KB Output is correct
16 Correct 42 ms 344 KB Output is correct
17 Partially correct 96 ms 600 KB Output is partially correct
18 Partially correct 147 ms 696 KB Output is partially correct
19 Partially correct 323 ms 848 KB Output is partially correct
20 Partially correct 309 ms 560 KB Output is partially correct
21 Correct 9 ms 344 KB Output is correct
22 Correct 13 ms 344 KB Output is correct
23 Correct 22 ms 344 KB Output is correct
24 Correct 27 ms 344 KB Output is correct
25 Correct 35 ms 344 KB Output is correct
26 Partially correct 218 ms 344 KB Output is partially correct
27 Partially correct 207 ms 472 KB Output is partially correct
28 Partially correct 211 ms 444 KB Output is partially correct
29 Partially correct 331 ms 600 KB Output is partially correct
30 Partially correct 312 ms 684 KB Output is partially correct
31 Partially correct 283 ms 720 KB Output is partially correct
32 Correct 14 ms 344 KB Output is correct
33 Correct 15 ms 344 KB Output is correct
34 Incorrect 1 ms 344 KB Incorrect
35 Halted 0 ms 0 KB -