oj.uz

Submission #1011609

# Submission time Handle Problem Language Result Execution time Memory
1011609 2024-06-30T20:40:30 Z mdn2002 Longest Trip (IOI23_longesttrip) C++17
85 / 100
 13 ms 604 KB 
#include "longesttrip.h"
#include <bits/stdc++.h>
using namespace std;


vector<int> longest_trip(int N, int D) {
    vector<int> a, b, c;
    for (int i = 0; i < N; i ++) c.push_back(i);
    random_shuffle (c.begin(), c.end());
    a.push_back(c[0]);

    int not_connected = 0;
    for (int I = 1; I < N; I ++) {
        int x = a.back(), i = c[I] , y = are_connected({x}, {i});
        if (y) {
            a.push_back(i);
            not_connected = 0;
            continue;
        }

        if (b.size() == 0) {
            b.push_back(i);
            not_connected = 1;
        }
        else {
            if (not_connected) {
                b.push_back(i);
                not_connected = 1;
                continue;
            }
            int z = b.back(), k = are_connected({z}, {i});
            if (k) b.push_back(i);
            else {
                for (int j = b.size() - 1; j >= 0; j --) a.push_back(b[j]);
                b.clear();
                b.push_back(i);
            }
        }
    }

    if (b.size() == 0) return a;
    if (are_connected(a, b) == 0){
        if (a.size() > b.size()) return a;
        return b;
    }

    if (are_connected({a.back()}, {b.back()})) {
        for (int j = b.size() - 1; j >= 0; j --) a.push_back(b[j]);
        return a;
    }
    else if (are_connected({a.back()}, {b[0]})) {
        for (int j = 0; j < b.size(); j ++) a.push_back(b[j]);
        return a;
    }
    else if (are_connected({a[0]}, {b.back()})) {
        for (int j = 0; j < a.size(); j ++) b.push_back(a[j]);
        return b;
    }
    else if (are_connected({a[0]}, {b[0]})) {
        reverse(a.begin(), a.end());
        for (int j = 0; j < b.size(); j ++) a.push_back(b[j]);
        return a;
    }

    int l = 0, r = a.size(), mid;
    while (l < r) {
        mid = (l + r) / 2;
        vector<int> temp;
        for (int i = 0; i <= mid; i ++) temp.push_back(a[i]);
        if (are_connected(temp, b)) r = mid;
        else l = mid + 1;
    }
    vector<int> ans;
    for (int i = l - 1; i >= 0; i --) ans.push_back(a[i]);
    for (int i = a.size() - 1; i >= l; i --) ans.push_back(a[i]);

    int x = a[l];

    l = 0, r = b.size();
    while (l < r) {
        mid = (l + r) / 2;
        vector<int> temp;
        for (int i = 0; i <= mid; i ++) temp.push_back(b[i]);
        if (are_connected({x}, temp)) r = mid;
        else l = mid + 1;
    }

    for (int i = l; i >= 0; i --) ans.push_back(b[i]);
    for (int i = b.size() - 1; i > l; i --) ans.push_back(b[i]);

    return ans;
}

Compilation message

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:52:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |         for (int j = 0; j < b.size(); j ++) a.push_back(b[j]);
      |                         ~~^~~~~~~~~~
longesttrip.cpp:56:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |         for (int j = 0; j < a.size(); j ++) b.push_back(a[j]);
      |                         ~~^~~~~~~~~~
longesttrip.cpp:61:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |         for (int j = 0; j < b.size(); j ++) a.push_back(b[j]);
      |                         ~~^~~~~~~~~~

Subtask #0
0.0 / 0.0

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

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 7 ms 344 KB Output is correct
4 Correct 5 ms 344 KB Output is correct
5 Correct 5 ms 344 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 5 ms 344 KB Output is correct
4 Correct 6 ms 344 KB Output is correct
5 Correct 5 ms 344 KB Output is correct
6 Correct 6 ms 344 KB Output is correct
7 Correct 6 ms 344 KB Output is correct
8 Correct 5 ms 344 KB Output is correct
9 Correct 5 ms 440 KB Output is correct
10 Correct 6 ms 344 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 7 ms 344 KB Output is correct
13 Correct 5 ms 344 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 5 ms 344 KB Output is correct
4 Correct 5 ms 344 KB Output is correct
5 Correct 5 ms 344 KB Output is correct
6 Correct 8 ms 344 KB Output is correct
7 Correct 6 ms 344 KB Output is correct
8 Correct 5 ms 344 KB Output is correct
9 Correct 5 ms 344 KB Output is correct
10 Correct 8 ms 344 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 4 ms 344 KB Output is correct
13 Correct 4 ms 344 KB Output is correct
14 Correct 4 ms 344 KB Output is correct
15 Correct 6 ms 344 KB Output is correct
16 Correct 8 ms 344 KB Output is correct
17 Correct 7 ms 344 KB Output is correct
18 Correct 6 ms 344 KB Output is correct
19 Correct 8 ms 344 KB Output is correct
20 Correct 7 ms 344 KB Output is correct
21 Correct 7 ms 600 KB Output is correct
22 Correct 8 ms 344 KB Output is correct
23 Correct 8 ms 344 KB Output is correct
24 Correct 8 ms 344 KB Output is correct
25 Correct 7 ms 344 KB Output is correct
26 Correct 7 ms 344 KB Output is correct
27 Correct 5 ms 344 KB Output is correct
28 Correct 5 ms 344 KB Output is correct
29 Correct 6 ms 344 KB Output is correct
30 Correct 5 ms 344 KB Output is correct
31 Correct 7 ms 344 KB Output is correct
32 Correct 8 ms 344 KB Output is correct
33 Correct 6 ms 600 KB Output is correct
34 Correct 5 ms 600 KB Output is correct
35 Correct 6 ms 344 KB Output is correct
36 Correct 6 ms 344 KB Output is correct
37 Correct 5 ms 344 KB Output is correct
38 Correct 7 ms 344 KB Output is correct
39 Correct 7 ms 344 KB Output is correct
40 Correct 9 ms 344 KB Output is correct
41 Correct 7 ms 344 KB Output is correct
42 Correct 10 ms 344 KB Output is correct
43 Correct 10 ms 344 KB Output is correct
44 Correct 8 ms 344 KB Output is correct
45 Correct 13 ms 344 KB Output is correct
46 Correct 9 ms 344 KB Output is correct
47 Correct 9 ms 344 KB Output is correct
48 Correct 9 ms 344 KB Output is correct
49 Correct 8 ms 344 KB Output is correct
50 Correct 6 ms 344 KB Output is correct
51 Correct 8 ms 344 KB Output is correct
52 Correct 9 ms 344 KB Output is correct
53 Correct 4 ms 344 KB Output is correct
54 Correct 7 ms 344 KB Output is correct
55 Correct 6 ms 344 KB Output is correct
56 Correct 6 ms 440 KB Output is correct
57 Correct 6 ms 600 KB Output is correct
58 Correct 5 ms 344 KB Output is correct
59 Correct 9 ms 344 KB Output is correct
60 Correct 6 ms 340 KB Output is correct
61 Correct 8 ms 600 KB Output is correct
62 Correct 8 ms 344 KB Output is correct
63 Correct 10 ms 344 KB Output is correct
64 Correct 8 ms 440 KB Output is correct

Subtask #4
45.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 344 KB Output is correct
2 Correct 5 ms 340 KB Output is correct
3 Correct 8 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 5 ms 344 KB Output is correct
6 Correct 8 ms 344 KB Output is correct
7 Correct 8 ms 344 KB Output is correct
8 Correct 6 ms 344 KB Output is correct
9 Correct 8 ms 344 KB Output is correct
10 Correct 6 ms 344 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 5 ms 344 KB Output is correct
13 Correct 8 ms 340 KB Output is correct
14 Correct 6 ms 344 KB Output is correct
15 Correct 8 ms 344 KB Output is correct
16 Correct 10 ms 344 KB Output is correct
17 Correct 7 ms 344 KB Output is correct
18 Correct 8 ms 344 KB Output is correct
19 Correct 5 ms 344 KB Output is correct
20 Correct 9 ms 436 KB Output is correct
21 Correct 4 ms 344 KB Output is correct
22 Correct 7 ms 344 KB Output is correct
23 Correct 6 ms 344 KB Output is correct
24 Correct 6 ms 344 KB Output is correct
25 Correct 6 ms 344 KB Output is correct
26 Correct 5 ms 344 KB Output is correct
27 Correct 6 ms 344 KB Output is correct
28 Correct 10 ms 344 KB Output is correct
29 Correct 6 ms 344 KB Output is correct
30 Correct 5 ms 344 KB Output is correct
31 Correct 7 ms 344 KB Output is correct
32 Correct 13 ms 344 KB Output is correct
33 Correct 9 ms 596 KB Output is correct
34 Correct 8 ms 344 KB Output is correct
35 Correct 12 ms 344 KB Output is correct
36 Correct 10 ms 340 KB Output is correct
37 Correct 8 ms 344 KB Output is correct
38 Correct 7 ms 344 KB Output is correct
39 Correct 11 ms 600 KB Output is correct
40 Correct 4 ms 436 KB Output is correct
41 Correct 8 ms 596 KB Output is correct
42 Correct 6 ms 344 KB Output is correct
43 Correct 6 ms 344 KB Output is correct
44 Correct 7 ms 600 KB Output is correct
45 Correct 6 ms 344 KB Output is correct
46 Correct 6 ms 344 KB Output is correct
47 Correct 7 ms 344 KB Output is correct
48 Correct 4 ms 344 KB Output is correct
49 Partially correct 7 ms 344 KB Output is partially correct
50 Correct 6 ms 344 KB Output is correct
51 Correct 7 ms 344 KB Output is correct
52 Correct 7 ms 344 KB Output is correct
53 Correct 8 ms 600 KB Output is correct
54 Correct 7 ms 344 KB Output is correct
55 Correct 11 ms 344 KB Output is correct
56 Correct 5 ms 344 KB Output is correct
57 Partially correct 6 ms 344 KB Output is partially correct
58 Partially correct 7 ms 344 KB Output is partially correct
59 Partially correct 7 ms 344 KB Output is partially correct
60 Correct 9 ms 344 KB Output is correct
61 Correct 8 ms 344 KB Output is correct
62 Correct 6 ms 448 KB Output is correct
63 Correct 8 ms 604 KB Output is correct
64 Correct 9 ms 440 KB Output is correct
65 Partially correct 9 ms 344 KB Output is partially correct
66 Correct 9 ms 600 KB Output is correct
67 Partially correct 8 ms 344 KB Output is partially correct
68 Partially correct 8 ms 440 KB Output is partially correct
69 Partially correct 12 ms 344 KB Output is partially correct
70 Partially correct 8 ms 344 KB Output is partially correct
71 Correct 6 ms 600 KB Output is correct
72 Correct 6 ms 444 KB Output is correct
73 Partially correct 8 ms 344 KB Output is partially correct
74 Partially correct 8 ms 440 KB Output is partially correct
75 Partially correct 8 ms 444 KB Output is partially correct
76 Partially correct 9 ms 344 KB Output is partially correct
77 Correct 8 ms 344 KB Output is correct
78 Correct 7 ms 440 KB Output is correct
79 Partially correct 8 ms 344 KB Output is partially correct
80 Partially correct 8 ms 600 KB Output is partially correct
81 Partially correct 9 ms 600 KB Output is partially correct
82 Partially correct 11 ms 440 KB Output is partially correct