oj.uz

Submission #1072441

# Submission time Handle Problem Language Result Execution time Memory
1072441 2024-08-23T19:06:25 Z HorizonWest Longest Trip (IOI23_longesttrip) C++17
30 / 100
 930 ms 1752 KB 
#include <iostream>
#include <complex>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <functional>
#include <bitset>
#include <queue>
#include <map>
#include <stack>
#include <cmath>
#include <cstdint>
#include <cassert>
#include "longesttrip.h"
using namespace std;
vector <int> longest_trip(int n, int d)
{
    vector <vector<int>> v(n, vector <int> ()),
        s(n, vector <int> (n, -1));

    auto add = [&] (int a, int b) -> void {
        if(s[a][b] == -1){
            s[a][b] = s[b][a] = 1;
            v[a].push_back(b);
            v[b].push_back(a);
        }
    };

    if(d == 3){
        for(int i = 0; i < n; i++){
            for(int j = i+1; j < n; j++) {
                add(i, j);
            }
        }
    }else if(d == 2){
        for(int i = 0; i < n; i++)
        {
            for(int j = i+1; j < n; j++) 
            {
                if(s[i][j] == -1){
                    s[i][j] = are_connected({ i }, { j }); 

                    if(s[i][j] == 0){
                        for(int k = 0; k < n; k++){
                            add(i, k); add(j, k);
                        }
                    }else{
                        s[i][j] = -1; add(i, j);
                    }
                }
            }
        }
    } else if(d == 1){
        for(int i = 0; i < n; i++)
        {
            for(int j = i+1; j < n; j++)
            {
                if(s[i][j] == -1){
                    s[i][j] = are_connected({ i }, { j }); 
                    if(s[i][j] == 1) {
                        s[i][j] = -1;
                        add(i, j);
                    }
                }
            }
        }
    }

    vector <int> pass(n), ans, path; 

    auto dfs = [&] (auto dfs, int node, int parent) -> void
    {
        path.push_back(node); pass[node] = 1;
        if(path.size() > ans.size()) ans = path;

        for(auto& u : v[node]) if(!pass[u]){
            if(v[u].size() != n) dfs(dfs, u, node); 
        }

        for(auto& u : v[node]) if(!pass[u])
        {
            dfs(dfs, u, node); 
        }

        path.pop_back(); 
    };

    for(int i = 0; i < n; i++){
        for(int j = 0; j < n; j++){ 
            pass[j] = 0;   
        }

        if(ans.size() == n) break;
        dfs(dfs, i, i);
    }

    return ans;
}

Compilation message

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:93:23: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   93 |         if(ans.size() == n) break;
      |            ~~~~~~~~~~~^~~~
longesttrip.cpp: In instantiation of 'longest_trip(int, int)::<lambda(auto:1, int, int)> [with auto:1 = longest_trip(int, int)::<lambda(auto:1, int, int)>]':
longesttrip.cpp:94:22:   required from here
longesttrip.cpp:77:28: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   77 |             if(v[u].size() != n) dfs(dfs, u, node);
      |                ~~~~~~~~~~~~^~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 188 ms 1004 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 1 ms 344 KB Output is correct
4 Correct 2 ms 600 KB Output is correct
5 Correct 3 ms 1068 KB Output is correct

Subtask #2
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 344 KB Output is correct
2 Correct 27 ms 344 KB Output is correct
3 Correct 156 ms 504 KB Output is correct
4 Correct 355 ms 600 KB Output is correct
5 Correct 724 ms 1060 KB Output is correct
6 Incorrect 1 ms 344 KB Incorrect
7 Halted 0 ms 0 KB -

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 344 KB Output is correct
2 Correct 30 ms 340 KB Output is correct
3 Correct 138 ms 464 KB Output is correct
4 Correct 369 ms 744 KB Output is correct
5 Correct 750 ms 1308 KB Output is correct
6 Correct 10 ms 344 KB Output is correct
7 Correct 26 ms 344 KB Output is correct
8 Correct 150 ms 452 KB Output is correct
9 Correct 247 ms 780 KB Output is correct
10 Correct 781 ms 1148 KB Output is correct
11 Correct 820 ms 1080 KB Output is correct
12 Correct 812 ms 1404 KB Output is correct
13 Correct 836 ms 1480 KB Output is correct
14 Correct 10 ms 344 KB Output is correct
15 Correct 12 ms 344 KB Output is correct
16 Correct 45 ms 344 KB Output is correct
17 Correct 95 ms 344 KB Output is correct
18 Correct 151 ms 456 KB Output is correct
19 Correct 307 ms 788 KB Output is correct
20 Correct 333 ms 560 KB Output is correct
21 Correct 834 ms 1376 KB Output is correct
22 Correct 899 ms 1308 KB Output is correct
23 Correct 864 ms 1752 KB Output is correct
24 Correct 824 ms 1156 KB Output is correct
25 Correct 7 ms 344 KB Output is correct
26 Correct 9 ms 344 KB Output is correct
27 Correct 25 ms 416 KB Output is correct
28 Correct 29 ms 408 KB Output is correct
29 Correct 20 ms 408 KB Output is correct
30 Correct 191 ms 604 KB Output is correct
31 Correct 204 ms 456 KB Output is correct
32 Correct 181 ms 452 KB Output is correct
33 Correct 358 ms 588 KB Output is correct
34 Correct 330 ms 748 KB Output is correct
35 Correct 325 ms 596 KB Output is correct
36 Correct 930 ms 1264 KB Output is correct
37 Correct 920 ms 1272 KB Output is correct
38 Correct 830 ms 1288 KB Output is correct
39 Correct 762 ms 1316 KB Output is correct
40 Correct 796 ms 1048 KB Output is correct
41 Correct 790 ms 868 KB Output is correct
42 Correct 745 ms 1040 KB Output is correct
43 Correct 705 ms 1356 KB Output is correct
44 Correct 796 ms 1060 KB Output is correct
45 Correct 9 ms 344 KB Output is correct
46 Correct 13 ms 344 KB Output is correct
47 Correct 29 ms 344 KB Output is correct
48 Correct 23 ms 596 KB Output is correct
49 Correct 21 ms 340 KB Output is correct
50 Correct 174 ms 452 KB Output is correct
51 Correct 184 ms 464 KB Output is correct
52 Correct 198 ms 456 KB Output is correct
53 Correct 273 ms 600 KB Output is correct
54 Correct 318 ms 552 KB Output is correct
55 Correct 298 ms 600 KB Output is correct
56 Correct 916 ms 1060 KB Output is correct
57 Correct 848 ms 1120 KB Output is correct
58 Correct 806 ms 1068 KB Output is correct
59 Correct 857 ms 1012 KB Output is correct
60 Correct 875 ms 1296 KB Output is correct
61 Correct 892 ms 1128 KB Output is correct
62 Correct 882 ms 940 KB Output is correct
63 Correct 888 ms 1224 KB Output is correct
64 Correct 895 ms 1016 KB Output is correct

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 344 KB Output is correct
2 Correct 33 ms 344 KB Output is correct
3 Partially correct 138 ms 724 KB Output is partially correct
4 Partially correct 399 ms 1132 KB Output is partially correct
5 Partially correct 829 ms 1236 KB Output is partially correct
6 Correct 7 ms 344 KB Output is correct
7 Correct 24 ms 344 KB Output is correct
8 Partially correct 133 ms 456 KB Output is partially correct
9 Partially correct 295 ms 1112 KB Output is partially correct
10 Partially correct 874 ms 1320 KB Output is partially correct
11 Partially correct 834 ms 1332 KB Output is partially correct
12 Partially correct 809 ms 1364 KB Output is partially correct
13 Partially correct 845 ms 1388 KB Output is partially correct
14 Correct 8 ms 344 KB Output is correct
15 Correct 11 ms 344 KB Output is correct
16 Incorrect 8 ms 344 KB Incorrect
17 Halted 0 ms 0 KB -