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Submission #840766

# Submission time Handle Problem Language Result Execution time Memory
840766 2023-08-31T16:50:45 Z emeraldblock Longest Trip (IOI23_longesttrip) C++17
100 / 100
 21 ms 464 KB 
#include <bits/stdc++.h>
#include <random>
#include "longesttrip.h"

using namespace std;

std::vector<int> longest_trip(int N, int D)
{
    vector<int> s1({0}),s2({1});
    bool sep = false;
    for (int i = 2; i < N; ++i) {
        if (are_connected({s1.back()}, {i})) {
            s1.push_back(i);
            sep = false;
        } else if (sep || are_connected({s2.back()}, {i})) {
            s2.push_back(i);
            sep = true;
        } else {
            while (!s2.empty()) {
                s1.push_back(s2.back());
                s2.pop_back();
            }
            s2.push_back(i);
        }
    }
    // for (auto x : s1) cerr << x << " ";
    // cerr << "\n";
    // for (auto x : s2) cerr << x << " ";
    // cerr << "\n";
    if (!are_connected(s1, s2)) {
        return s1.size() >= s2.size() ? s1 : s2;
    }
    if (are_connected(s1,{s2.front()})) {
            reverse(s2.begin(),s2.end());
    } else {
        int lo = 0, hi = s2.size();
        while (hi-lo>1) {
            int mid = (lo+hi)/2;
            vector<int> v;
            for (int i = mid; i < hi; ++i) {
                v.push_back(s2[i]);
            }
            if (!are_connected(s1, v)) {
                hi = mid;
            } else {
                lo = mid;
            }
        }
        rotate(s2.begin(),s2.begin()+hi,s2.end());
    }
    if (are_connected({s1.front()},{s2.back()})) {
        reverse(s1.begin(),s1.end());
    } else {
        int lo = 0, hi = s1.size();
        while (hi-lo>1) {
            int mid = (lo+hi)/2;
            vector<int> v;
            for (int i = mid; i < hi; ++i) {
                v.push_back(s1[i]);
            }
            if (!are_connected(v, {s2.back()})) {
                hi = mid;
            } else {
                lo = mid;
            }
        }
        rotate(s1.begin(),s1.begin()+hi,s1.end());
    }
    // for (auto x : s1) cerr << x << " ";
    // cerr << "\n";
    // for (auto x : s2) cerr << x << " ";
    // cerr << "\n";
    while (!s2.empty()) {
        s1.push_back(s2.back());
        s2.pop_back();
    }
    return s1;
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 2 ms 300 KB Output is correct

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 208 KB Output is correct
2 Correct 10 ms 208 KB Output is correct
3 Correct 10 ms 208 KB Output is correct
4 Correct 10 ms 208 KB Output is correct
5 Correct 7 ms 208 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 208 KB Output is correct
2 Correct 14 ms 208 KB Output is correct
3 Correct 6 ms 248 KB Output is correct
4 Correct 4 ms 208 KB Output is correct
5 Correct 7 ms 208 KB Output is correct
6 Correct 9 ms 208 KB Output is correct
7 Correct 13 ms 208 KB Output is correct
8 Correct 9 ms 208 KB Output is correct
9 Correct 10 ms 208 KB Output is correct
10 Correct 10 ms 208 KB Output is correct
11 Correct 10 ms 208 KB Output is correct
12 Correct 6 ms 208 KB Output is correct
13 Correct 9 ms 208 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 208 KB Output is correct
2 Correct 13 ms 208 KB Output is correct
3 Correct 11 ms 208 KB Output is correct
4 Correct 6 ms 208 KB Output is correct
5 Correct 10 ms 304 KB Output is correct
6 Correct 18 ms 208 KB Output is correct
7 Correct 11 ms 208 KB Output is correct
8 Correct 7 ms 208 KB Output is correct
9 Correct 11 ms 208 KB Output is correct
10 Correct 12 ms 208 KB Output is correct
11 Correct 8 ms 208 KB Output is correct
12 Correct 8 ms 208 KB Output is correct
13 Correct 9 ms 208 KB Output is correct
14 Correct 9 ms 208 KB Output is correct
15 Correct 9 ms 208 KB Output is correct
16 Correct 14 ms 208 KB Output is correct
17 Correct 10 ms 208 KB Output is correct
18 Correct 5 ms 208 KB Output is correct
19 Correct 10 ms 300 KB Output is correct
20 Correct 11 ms 300 KB Output is correct
21 Correct 9 ms 208 KB Output is correct
22 Correct 9 ms 208 KB Output is correct
23 Correct 6 ms 328 KB Output is correct
24 Correct 8 ms 208 KB Output is correct
25 Correct 7 ms 256 KB Output is correct
26 Correct 6 ms 208 KB Output is correct
27 Correct 12 ms 208 KB Output is correct
28 Correct 7 ms 208 KB Output is correct
29 Correct 8 ms 208 KB Output is correct
30 Correct 9 ms 208 KB Output is correct
31 Correct 7 ms 208 KB Output is correct
32 Correct 12 ms 208 KB Output is correct
33 Correct 7 ms 208 KB Output is correct
34 Correct 9 ms 208 KB Output is correct
35 Correct 6 ms 208 KB Output is correct
36 Correct 9 ms 208 KB Output is correct
37 Correct 9 ms 208 KB Output is correct
38 Correct 10 ms 208 KB Output is correct
39 Correct 8 ms 208 KB Output is correct
40 Correct 12 ms 208 KB Output is correct
41 Correct 11 ms 208 KB Output is correct
42 Correct 9 ms 336 KB Output is correct
43 Correct 9 ms 296 KB Output is correct
44 Correct 7 ms 208 KB Output is correct
45 Correct 9 ms 208 KB Output is correct
46 Correct 20 ms 208 KB Output is correct
47 Correct 13 ms 208 KB Output is correct
48 Correct 14 ms 208 KB Output is correct
49 Correct 11 ms 208 KB Output is correct
50 Correct 10 ms 208 KB Output is correct
51 Correct 14 ms 208 KB Output is correct
52 Correct 7 ms 208 KB Output is correct
53 Correct 10 ms 228 KB Output is correct
54 Correct 10 ms 208 KB Output is correct
55 Correct 9 ms 208 KB Output is correct
56 Correct 10 ms 256 KB Output is correct
57 Correct 11 ms 208 KB Output is correct
58 Correct 12 ms 208 KB Output is correct
59 Correct 11 ms 336 KB Output is correct
60 Correct 7 ms 292 KB Output is correct
61 Correct 12 ms 208 KB Output is correct
62 Correct 9 ms 256 KB Output is correct
63 Correct 12 ms 208 KB Output is correct
64 Correct 10 ms 208 KB Output is correct

Subtask #4
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 208 KB Output is correct
2 Correct 12 ms 208 KB Output is correct
3 Correct 10 ms 208 KB Output is correct
4 Correct 10 ms 208 KB Output is correct
5 Correct 7 ms 208 KB Output is correct
6 Correct 21 ms 208 KB Output is correct
7 Correct 10 ms 208 KB Output is correct
8 Correct 13 ms 208 KB Output is correct
9 Correct 9 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 10 ms 208 KB Output is correct
13 Correct 9 ms 208 KB Output is correct
14 Correct 9 ms 208 KB Output is correct
15 Correct 12 ms 208 KB Output is correct
16 Correct 9 ms 208 KB Output is correct
17 Correct 12 ms 208 KB Output is correct
18 Correct 7 ms 208 KB Output is correct
19 Correct 11 ms 208 KB Output is correct
20 Correct 7 ms 208 KB Output is correct
21 Correct 10 ms 208 KB Output is correct
22 Correct 6 ms 332 KB Output is correct
23 Correct 11 ms 208 KB Output is correct
24 Correct 7 ms 208 KB Output is correct
25 Correct 9 ms 208 KB Output is correct
26 Correct 8 ms 208 KB Output is correct
27 Correct 8 ms 208 KB Output is correct
28 Correct 10 ms 332 KB Output is correct
29 Correct 9 ms 208 KB Output is correct
30 Correct 8 ms 208 KB Output is correct
31 Correct 10 ms 332 KB Output is correct
32 Correct 11 ms 208 KB Output is correct
33 Correct 12 ms 256 KB Output is correct
34 Correct 9 ms 208 KB Output is correct
35 Correct 13 ms 208 KB Output is correct
36 Correct 11 ms 208 KB Output is correct
37 Correct 10 ms 208 KB Output is correct
38 Correct 12 ms 208 KB Output is correct
39 Correct 10 ms 208 KB Output is correct
40 Correct 8 ms 296 KB Output is correct
41 Correct 11 ms 208 KB Output is correct
42 Correct 11 ms 208 KB Output is correct
43 Correct 11 ms 208 KB Output is correct
44 Correct 7 ms 208 KB Output is correct
45 Correct 10 ms 208 KB Output is correct
46 Correct 11 ms 208 KB Output is correct
47 Correct 9 ms 208 KB Output is correct
48 Correct 9 ms 208 KB Output is correct
49 Correct 9 ms 332 KB Output is correct
50 Correct 11 ms 296 KB Output is correct
51 Correct 6 ms 460 KB Output is correct
52 Correct 11 ms 208 KB Output is correct
53 Correct 7 ms 208 KB Output is correct
54 Correct 12 ms 208 KB Output is correct
55 Correct 11 ms 208 KB Output is correct
56 Correct 9 ms 208 KB Output is correct
57 Correct 7 ms 208 KB Output is correct
58 Correct 10 ms 208 KB Output is correct
59 Correct 7 ms 208 KB Output is correct
60 Correct 7 ms 208 KB Output is correct
61 Correct 9 ms 208 KB Output is correct
62 Correct 8 ms 208 KB Output is correct
63 Correct 7 ms 208 KB Output is correct
64 Correct 8 ms 208 KB Output is correct
65 Correct 11 ms 208 KB Output is correct
66 Correct 9 ms 208 KB Output is correct
67 Correct 10 ms 208 KB Output is correct
68 Correct 10 ms 208 KB Output is correct
69 Correct 9 ms 260 KB Output is correct
70 Correct 9 ms 304 KB Output is correct
71 Correct 10 ms 208 KB Output is correct
72 Correct 11 ms 208 KB Output is correct
73 Correct 13 ms 280 KB Output is correct
74 Correct 12 ms 208 KB Output is correct
75 Correct 15 ms 208 KB Output is correct
76 Correct 6 ms 464 KB Output is correct
77 Correct 7 ms 208 KB Output is correct
78 Correct 12 ms 208 KB Output is correct
79 Correct 10 ms 208 KB Output is correct
80 Correct 10 ms 284 KB Output is correct
81 Correct 12 ms 208 KB Output is correct
82 Correct 9 ms 256 KB Output is correct