oj.uz

답안 #839726

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
839726 2023-08-30T15:49:04 Z model_code 가장 긴 여행 (IOI23_longesttrip) C++17
100 / 100
 15 ms 320 KB 
// correct/sol_birka0_D1_opt2.cpp

#include "longesttrip.h"

#include <random>
#include <algorithm>

using namespace std;

vector<int> longest_trip(int N, int /*D*/)
{
    srand(time(0));
    std::vector<int> ids(N);
    for (int i = 0; i < N; i++)
        ids[i] = i;
    random_shuffle(ids.begin(), ids.end());

    vector<int> t1 = {ids[0]}, t2;
    bool goodtip = false;
    for (int j = 1; j < N; ++j)
    {
        int i = ids[j];
        if (are_connected({t1.back()}, {i}))
        {
            t1.push_back(i);
            goodtip = false;
        }
        else
        {
            if (t2.empty())
            {
                t2 = t1;
                t1 = {i};
                goodtip = true;
            }
            else if (goodtip)
            {
                t2.push_back(i);
            }
            else
            {
                if (are_connected({i}, {t2.back()}))
                {
                    t2.push_back(i);
                    goodtip = true;
                }
                else
                {
                    int x = i;
                    vector<int> nw;
                    while (j + 1 < N && nw.size() < 2)
                    {
                        i = ids[++j];
                        if (are_connected({x}, {i}))
                        {
                            nw.push_back(i);
                        }
                        else
                        {
                            t1.push_back(i);
                        }
                    }
                    t1.insert(t1.end(), t2.rbegin(), t2.rend());
                    if (nw.size() == 2)
                        nw = {nw[0], x, nw[1]};
                    else
                        nw.push_back(x);
                    t2 = nw;
                    goodtip = false;
                }
            }
        }
    }

    if (t2.size() > t1.size())
        swap(t1, t2);
    if (t2.empty() || !are_connected(t1, t2))
    {
        return t1;
    }
    if (are_connected({t1.back()}, {t2[0]}))
    {
        t1.insert(t1.end(), t2.begin(), t2.end());
        return t1;
    }
    reverse(t2.begin(), t2.end());
    if (are_connected({t1.back()}, {t2[0]}))
    {
        t1.insert(t1.end(), t2.begin(), t2.end());
        return t1;
    }
    reverse(t1.begin(), t1.end());
    if (are_connected({t1.back()}, {t2[0]}))
    {
        t1.insert(t1.end(), t2.begin(), t2.end());
        return t1;
    }
    reverse(t2.begin(), t2.end());
    if (are_connected({t1.back()}, {t2[0]}))
    {
        t1.insert(t1.end(), t2.begin(), t2.end());
        return t1;
    }
    int lo = 0, hi = t2.size();
    while (lo + 1 < hi)
    {
        int mid = (lo + hi) / 2;
        if (are_connected(t1, vector<int>(t2.begin() + mid, t2.begin() + hi)))
        {
            lo = mid;
        }
        else
        {
            hi = mid;
        }
    }
    int x = lo;
    lo = 0, hi = t1.size();
    while (lo + 1 < hi)
    {
        int mid = (lo + hi) / 2;
        if (are_connected({t2[x]}, vector<int>(t1.begin() + mid, t1.begin() + hi)))
        {
            lo = mid;
        }
        else
        {
            hi = mid;
        }
    }
    int y = lo;
    vector<int> t(t1.begin() + y + 1, t1.end());
    t.insert(t.end(), t1.begin(), t1.begin() + y + 1);
    t.insert(t.end(), t2.begin() + x, t2.end());
    t.insert(t.end(), t2.begin(), t2.begin() + x);

    return t;
}

Subtask #0
0.0 / 0.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 4 ms 208 KB Output is correct

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 256 KB Output is correct
2 Correct 7 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 9 ms 256 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 256 KB Output is correct
2 Correct 7 ms 256 KB Output is correct
3 Correct 6 ms 208 KB Output is correct
4 Correct 7 ms 208 KB Output is correct
5 Correct 9 ms 288 KB Output is correct
6 Correct 8 ms 208 KB Output is correct
7 Correct 10 ms 208 KB Output is correct
8 Correct 9 ms 208 KB Output is correct
9 Correct 5 ms 284 KB Output is correct
10 Correct 7 ms 208 KB Output is correct
11 Correct 7 ms 208 KB Output is correct
12 Correct 4 ms 288 KB Output is correct
13 Correct 5 ms 288 KB Output is correct

Subtask #3
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 280 KB Output is correct
2 Correct 5 ms 208 KB Output is correct
3 Correct 9 ms 256 KB Output is correct
4 Correct 10 ms 208 KB Output is correct
5 Correct 7 ms 208 KB Output is correct
6 Correct 10 ms 208 KB Output is correct
7 Correct 12 ms 208 KB Output is correct
8 Correct 8 ms 292 KB Output is correct
9 Correct 6 ms 276 KB Output is correct
10 Correct 12 ms 320 KB Output is correct
11 Correct 11 ms 292 KB Output is correct
12 Correct 10 ms 228 KB Output is correct
13 Correct 8 ms 288 KB Output is correct
14 Correct 11 ms 208 KB Output is correct
15 Correct 9 ms 208 KB Output is correct
16 Correct 8 ms 208 KB Output is correct
17 Correct 10 ms 256 KB Output is correct
18 Correct 14 ms 284 KB Output is correct
19 Correct 7 ms 288 KB Output is correct
20 Correct 10 ms 288 KB Output is correct
21 Correct 14 ms 208 KB Output is correct
22 Correct 7 ms 292 KB Output is correct
23 Correct 15 ms 292 KB Output is correct
24 Correct 7 ms 296 KB Output is correct
25 Correct 11 ms 208 KB Output is correct
26 Correct 8 ms 208 KB Output is correct
27 Correct 9 ms 208 KB Output is correct
28 Correct 9 ms 208 KB Output is correct
29 Correct 7 ms 208 KB Output is correct
30 Correct 8 ms 292 KB Output is correct
31 Correct 10 ms 288 KB Output is correct
32 Correct 10 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 6 ms 296 KB Output is correct
37 Correct 7 ms 208 KB Output is correct
38 Correct 9 ms 296 KB Output is correct
39 Correct 8 ms 292 KB Output is correct
40 Correct 11 ms 208 KB Output is correct
41 Correct 8 ms 208 KB Output is correct
42 Correct 11 ms 288 KB Output is correct
43 Correct 11 ms 208 KB Output is correct
44 Correct 10 ms 208 KB Output is correct
45 Correct 8 ms 208 KB Output is correct
46 Correct 11 ms 208 KB Output is correct
47 Correct 12 ms 208 KB Output is correct
48 Correct 13 ms 208 KB Output is correct
49 Correct 14 ms 252 KB Output is correct
50 Correct 7 ms 320 KB Output is correct
51 Correct 13 ms 284 KB Output is correct
52 Correct 14 ms 208 KB Output is correct
53 Correct 11 ms 292 KB Output is correct
54 Correct 10 ms 208 KB Output is correct
55 Correct 11 ms 288 KB Output is correct
56 Correct 10 ms 280 KB Output is correct
57 Correct 10 ms 288 KB Output is correct
58 Correct 9 ms 296 KB Output is correct
59 Correct 11 ms 208 KB Output is correct
60 Correct 10 ms 288 KB Output is correct
61 Correct 10 ms 296 KB Output is correct
62 Correct 9 ms 208 KB Output is correct
63 Correct 12 ms 208 KB Output is correct
64 Correct 9 ms 288 KB Output is correct

Subtask #4
60.0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 208 KB Output is correct
2 Correct 6 ms 208 KB Output is correct
3 Correct 7 ms 208 KB Output is correct
4 Correct 9 ms 208 KB Output is correct
5 Correct 9 ms 208 KB Output is correct
6 Correct 10 ms 208 KB Output is correct
7 Correct 10 ms 208 KB Output is correct
8 Correct 10 ms 208 KB Output is correct
9 Correct 8 ms 208 KB Output is correct
10 Correct 9 ms 284 KB Output is correct
11 Correct 8 ms 208 KB Output is correct
12 Correct 9 ms 292 KB Output is correct
13 Correct 6 ms 288 KB Output is correct
14 Correct 13 ms 208 KB Output is correct
15 Correct 8 ms 228 KB Output is correct
16 Correct 13 ms 208 KB Output is correct
17 Correct 9 ms 280 KB Output is correct
18 Correct 11 ms 208 KB Output is correct
19 Correct 6 ms 208 KB Output is correct
20 Correct 10 ms 208 KB Output is correct
21 Correct 9 ms 208 KB Output is correct
22 Correct 13 ms 208 KB Output is correct
23 Correct 12 ms 208 KB Output is correct
24 Correct 9 ms 208 KB Output is correct
25 Correct 8 ms 236 KB Output is correct
26 Correct 8 ms 292 KB Output is correct
27 Correct 8 ms 208 KB Output is correct
28 Correct 8 ms 208 KB Output is correct
29 Correct 6 ms 288 KB Output is correct
30 Correct 8 ms 292 KB Output is correct
31 Correct 9 ms 208 KB Output is correct
32 Correct 8 ms 208 KB Output is correct
33 Correct 8 ms 208 KB Output is correct
34 Correct 12 ms 208 KB Output is correct
35 Correct 15 ms 208 KB Output is correct
36 Correct 13 ms 208 KB Output is correct
37 Correct 12 ms 208 KB Output is correct
38 Correct 10 ms 284 KB Output is correct
39 Correct 13 ms 292 KB Output is correct
40 Correct 9 ms 208 KB Output is correct
41 Correct 8 ms 208 KB Output is correct
42 Correct 10 ms 296 KB Output is correct
43 Correct 10 ms 292 KB Output is correct
44 Correct 11 ms 292 KB Output is correct
45 Correct 8 ms 284 KB Output is correct
46 Correct 8 ms 288 KB Output is correct
47 Correct 9 ms 292 KB Output is correct
48 Correct 7 ms 288 KB Output is correct
49 Correct 9 ms 208 KB Output is correct
50 Correct 9 ms 208 KB Output is correct
51 Correct 11 ms 284 KB Output is correct
52 Correct 8 ms 288 KB Output is correct
53 Correct 11 ms 208 KB Output is correct
54 Correct 8 ms 208 KB Output is correct
55 Correct 9 ms 292 KB Output is correct
56 Correct 7 ms 208 KB Output is correct
57 Correct 11 ms 292 KB Output is correct
58 Correct 11 ms 208 KB Output is correct
59 Correct 7 ms 288 KB Output is correct
60 Correct 13 ms 284 KB Output is correct
61 Correct 8 ms 208 KB Output is correct
62 Correct 7 ms 292 KB Output is correct
63 Correct 8 ms 296 KB Output is correct
64 Correct 8 ms 208 KB Output is correct
65 Correct 11 ms 208 KB Output is correct
66 Correct 12 ms 208 KB Output is correct
67 Correct 12 ms 288 KB Output is correct
68 Correct 12 ms 208 KB Output is correct
69 Correct 10 ms 300 KB Output is correct
70 Correct 11 ms 208 KB Output is correct
71 Correct 8 ms 284 KB Output is correct
72 Correct 10 ms 292 KB Output is correct
73 Correct 9 ms 288 KB Output is correct
74 Correct 10 ms 284 KB Output is correct
75 Correct 8 ms 284 KB Output is correct
76 Correct 13 ms 296 KB Output is correct
77 Correct 8 ms 288 KB Output is correct
78 Correct 7 ms 292 KB Output is correct
79 Correct 11 ms 276 KB Output is correct
80 Correct 10 ms 296 KB Output is correct
81 Correct 12 ms 284 KB Output is correct
82 Correct 11 ms 292 KB Output is correct