oj.uz

Submission #1080934

# Submission time Handle Problem Language Result Execution time Memory
1080934 2024-08-29T16:06:09 Z asdasdqwer Longest Trip (IOI23_longesttrip) C++17
40 / 100
 929 ms 1324 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 = 17;
    mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
    for (int i=0;i<N;i++) {
        shuffle(g[i].begin(), g[i].end(), rng);
    }

    vector<int> lng;
    for (int i=0;i<N;i++) {
        vector<int> tmp;
        vector<bool> vis(N, false);
        function<void(int)> dfs=[&](int node) {
            vis[node] = true;
            tmp.push_back(node);

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

        dfs(i);

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

        if ((D == 2 && lng.size() == N) || (D == 1 && lng.size() >= (N/2+1))) return lng;
    }

    return lng;
}

Compilation message

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:53:35: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   53 |         if ((D == 2 && lng.size() == N) || (D == 1 && lng.size() >= (N/2+1))) return lng;
      |                        ~~~~~~~~~~~^~~~
longesttrip.cpp:53:66: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   53 |         if ((D == 2 && lng.size() == N) || (D == 1 && lng.size() >= (N/2+1))) return lng;
      |                                                       ~~~~~~~~~~~^~~~~~~~~~
longesttrip.cpp:25:9: warning: unused variable 'tries' [-Wunused-variable]
   25 |     int tries = 17;
      |         ^~~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Incorrect 222 ms 1064 KB Incorrect
3 Halted 0 ms 0 KB -

Subtask #1
5.0 / 5.0

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

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 344 KB Output is correct
2 Correct 24 ms 344 KB Output is correct
3 Correct 142 ms 600 KB Output is correct
4 Correct 384 ms 724 KB Output is correct
5 Correct 872 ms 988 KB Output is correct
6 Correct 10 ms 344 KB Output is correct
7 Correct 31 ms 344 KB Output is correct
8 Correct 147 ms 344 KB Output is correct
9 Correct 359 ms 736 KB Output is correct
10 Correct 803 ms 820 KB Output is correct
11 Correct 860 ms 1020 KB Output is correct
12 Correct 862 ms 1312 KB Output is correct
13 Correct 871 ms 756 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 31 ms 344 KB Output is correct
3 Correct 164 ms 464 KB Output is correct
4 Correct 426 ms 344 KB Output is correct
5 Correct 887 ms 1204 KB Output is correct
6 Correct 7 ms 344 KB Output is correct
7 Correct 26 ms 344 KB Output is correct
8 Correct 138 ms 440 KB Output is correct
9 Correct 312 ms 500 KB Output is correct
10 Correct 862 ms 1324 KB Output is correct
11 Correct 796 ms 748 KB Output is correct
12 Correct 855 ms 1056 KB Output is correct
13 Correct 789 ms 936 KB Output is correct
14 Correct 7 ms 344 KB Output is correct
15 Correct 15 ms 344 KB Output is correct
16 Correct 49 ms 344 KB Output is correct
17 Correct 94 ms 344 KB Output is correct
18 Correct 146 ms 344 KB Output is correct
19 Correct 305 ms 720 KB Output is correct
20 Correct 348 ms 496 KB Output is correct
21 Correct 888 ms 992 KB Output is correct
22 Correct 856 ms 1156 KB Output is correct
23 Correct 834 ms 1292 KB Output is correct
24 Correct 843 ms 1172 KB Output is correct
25 Correct 10 ms 344 KB Output is correct
26 Correct 9 ms 344 KB Output is correct
27 Correct 31 ms 344 KB Output is correct
28 Correct 33 ms 344 KB Output is correct
29 Correct 25 ms 344 KB Output is correct
30 Correct 196 ms 344 KB Output is correct
31 Correct 173 ms 344 KB Output is correct
32 Correct 196 ms 452 KB Output is correct
33 Correct 271 ms 440 KB Output is correct
34 Correct 282 ms 728 KB Output is correct
35 Correct 286 ms 608 KB Output is correct
36 Correct 739 ms 1236 KB Output is correct
37 Correct 785 ms 856 KB Output is correct
38 Correct 811 ms 1104 KB Output is correct
39 Correct 753 ms 884 KB Output is correct
40 Correct 813 ms 844 KB Output is correct
41 Correct 801 ms 780 KB Output is correct
42 Correct 771 ms 832 KB Output is correct
43 Correct 865 ms 796 KB Output is correct
44 Correct 873 ms 992 KB Output is correct
45 Correct 11 ms 344 KB Output is correct
46 Correct 10 ms 344 KB Output is correct
47 Correct 23 ms 344 KB Output is correct
48 Correct 21 ms 344 KB Output is correct
49 Correct 18 ms 344 KB Output is correct
50 Correct 213 ms 344 KB Output is correct
51 Correct 209 ms 344 KB Output is correct
52 Correct 188 ms 436 KB Output is correct
53 Correct 328 ms 476 KB Output is correct
54 Correct 317 ms 496 KB Output is correct
55 Correct 307 ms 488 KB Output is correct
56 Correct 854 ms 1112 KB Output is correct
57 Correct 862 ms 876 KB Output is correct
58 Correct 858 ms 1048 KB Output is correct
59 Correct 842 ms 1188 KB Output is correct
60 Correct 929 ms 976 KB Output is correct
61 Correct 856 ms 888 KB Output is correct
62 Correct 851 ms 992 KB Output is correct
63 Correct 898 ms 748 KB Output is correct
64 Correct 856 ms 792 KB Output is correct

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 344 KB Output is correct
2 Correct 23 ms 344 KB Output is correct
3 Partially correct 169 ms 436 KB Output is partially correct
4 Partially correct 401 ms 712 KB Output is partially correct
5 Partially correct 859 ms 900 KB Output is partially correct
6 Incorrect 0 ms 344 KB Incorrect
7 Halted 0 ms 0 KB -