oj.uz

Submission #1112592

# Submission time Handle Problem Language Result Execution time Memory
1112592 2024-11-14T11:13:37 Z tibinyte Longest Trip (IOI23_longesttrip) C++17
15 / 100
 1000 ms 1360 KB 
#include "longesttrip.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

const string asafaciunstringsus = R""""(
So what if you can see the darkest side of me?
No one would ever change this animal I have become
Help me believe it's not the real me
Somebody help me tame this animal
)"""";

typedef long long ll;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int random(int st, int dr)
{
    uniform_int_distribution<int> dist(st, dr);
    return dist(rng);
}

template <typename t>
using ordered_set = tree<t, null_type, less<t>, rb_tree_tag, tree_order_statistics_node_update>;

const int mod = 1e9 + 7;
struct Mint
{
    int val;
    Mint(int x = 0)
    {
        val = x % mod;
    }
    Mint(long long x)
    {
        val = x % mod;
    }
    Mint operator+(Mint oth)
    {
        return val + oth.val;
    }
    Mint operator-(Mint oth)
    {
        return val - oth.val + mod;
    }
    Mint operator*(Mint oth)
    {
        return 1ll * val * oth.val;
    }
    void operator+=(Mint oth)
    {
        val = (*this + oth).val;
    }
    void operator-=(Mint oth)
    {
        val = (*this - oth).val;
    }
    void operator*=(Mint oth)
    {
        val = (*this * oth).val;
    }
};

Mint powmod(int a, int b)
{
    if (b == 0)
    {
        return 1;
    }
    if (b % 2 == 1)
    {
        return powmod(a, b - 1) * a;
    }
    Mint p = powmod(a, b / 2);
    return p * p;
}

/*
                 .___                 __                 __           .__
  ____  ____   __| _/____     _______/  |______ ________/  |_  ______ |  |__   ___________   ____
_/ ___\/  _ \ / __ |/ __ \   /  ___/\   __\__  \\_  __ \   __\/  ___/ |  |  \_/ __ \_  __ \_/ __ \
\  \__(  <_> ) /_/ \  ___/   \___ \  |  |  / __ \|  | \/|  |  \___ \  |   Y  \  ___/|  | \/\  ___/
 \___  >____/\____ |\___  > /____  > |__| (____  /__|   |__| /____  > |___|  /\___  >__|    \___  >
     \/           \/    \/       \/            \/                 \/       \/     \/            \/
*/
vector<vector<int>> mat;

bool get(int i, int j)
{
    if (mat[i][j] == -1)
    {
        mat[i][j] = mat[j][i] = are_connected({i}, {j});
    }
    return mat[i][j];
}

std::vector<int> longest_trip(int N, int D)
{
    int n = N;
    mat = vector<vector<int>>(n, vector<int>(n, -1));
    vector<bool> vis(n);
    vector<int> ord;
    function<void(int)> dfs = [&](int node)
    {
        ord.push_back(node);
        vis[node] = true;
        for (int i = 0; i < n; ++i)
        {
            if (!vis[i] && get(node, i))
            {
                dfs(i);
            }
        }
    };
    function<vector<int>(vector<int>)> build = [&](vector<int> ord)
    {
        if (ord.size() <= 2)
        {
            return ord;
        }
        vector<int> ans;
        ans.push_back(ord[0]);
        ans.push_back(ord[1]);
        for (int lol = 2; lol < ord.size(); ++lol)
        {
            int it = ord[lol];
            if (get(ans.back(), it))
            {
                ans.push_back(it);
                continue;
            }
            if (get(ans.front(), it))
            {
                ans.insert(ans.begin(), it);
                continue;
            }
            for (int i = 0; i < ans.size(); ++i)
            {
                int node = ans[i];
                if (get(node, it))
                {
                    vector<int> new_ans(ans.size() + 1);
                    int p = 0;
                    new_ans[p++] = it;
                    for (int j = i; j >= 0; --j)
                    {
                        new_ans[p++] = ans[j];
                    }
                    for (int j = ans.size() - 1; j > i; --j)
                    {
                        new_ans[p++] = ans[j];
                    }
                    ans = new_ans;
                    break;
                }
            }
        }
        return ans;
    };
    vector<int> ans;
    for (int i = 0; i < n; ++i)
    {
        if (!vis[i])
        {
            dfs(i);
            if (ord.size() > ans.size())
            {
                ans = build(ord);
            }
            ord.clear();
        }
    }
    return ans;
}

/*
I cannot take this anymore
Saying everything I've said before
All these words, they make no sense
I find bliss in ignorance
Less I hear, the less you say
You'll find that out anyway
Just like before

Everything you say to me
(Takes me one step closer to the edge)
(And I'm about to break)
I need a little room to breathe
(Cause I'm one step closer to the edge)
(I'm about to break)
*/

Compilation message

longesttrip.cpp: In lambda function:
longesttrip.cpp:127:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  127 |         for (int lol = 2; lol < ord.size(); ++lol)
      |                           ~~~~^~~~~~~~~~~~
longesttrip.cpp:140:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  140 |             for (int i = 0; i < ans.size(); ++i)
      |                             ~~^~~~~~~~~~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 4 ms 592 KB Output is correct

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 336 KB Output is correct
2 Correct 16 ms 444 KB Output is correct
3 Correct 17 ms 336 KB Output is correct
4 Correct 19 ms 336 KB Output is correct
5 Correct 16 ms 976 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 336 KB Output is correct
2 Correct 16 ms 336 KB Output is correct
3 Correct 17 ms 336 KB Output is correct
4 Correct 16 ms 336 KB Output is correct
5 Correct 14 ms 968 KB Output is correct
6 Correct 15 ms 336 KB Output is correct
7 Correct 19 ms 336 KB Output is correct
8 Correct 21 ms 336 KB Output is correct
9 Correct 17 ms 336 KB Output is correct
10 Correct 18 ms 968 KB Output is correct
11 Correct 12 ms 976 KB Output is correct
12 Correct 19 ms 992 KB Output is correct
13 Correct 17 ms 976 KB Output is correct

Subtask #3
0.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 336 KB Output is correct
2 Correct 16 ms 504 KB Output is correct
3 Correct 16 ms 336 KB Output is correct
4 Correct 16 ms 336 KB Output is correct
5 Correct 19 ms 1108 KB Output is correct
6 Correct 19 ms 336 KB Output is correct
7 Correct 20 ms 584 KB Output is correct
8 Correct 17 ms 336 KB Output is correct
9 Correct 16 ms 336 KB Output is correct
10 Correct 17 ms 1116 KB Output is correct
11 Correct 17 ms 972 KB Output is correct
12 Correct 13 ms 1224 KB Output is correct
13 Correct 16 ms 976 KB Output is correct
14 Correct 19 ms 336 KB Output is correct
15 Correct 31 ms 336 KB Output is correct
16 Correct 22 ms 336 KB Output is correct
17 Correct 29 ms 336 KB Output is correct
18 Correct 21 ms 336 KB Output is correct
19 Correct 15 ms 336 KB Output is correct
20 Correct 21 ms 336 KB Output is correct
21 Correct 19 ms 976 KB Output is correct
22 Correct 21 ms 1232 KB Output is correct
23 Correct 23 ms 968 KB Output is correct
24 Correct 19 ms 984 KB Output is correct
25 Correct 26 ms 336 KB Output is correct
26 Correct 43 ms 336 KB Output is correct
27 Correct 29 ms 436 KB Output is correct
28 Correct 34 ms 436 KB Output is correct
29 Correct 33 ms 432 KB Output is correct
30 Correct 35 ms 336 KB Output is correct
31 Correct 243 ms 452 KB Output is correct
32 Correct 360 ms 460 KB Output is correct
33 Correct 30 ms 336 KB Output is correct
34 Correct 74 ms 524 KB Output is correct
35 Correct 124 ms 736 KB Output is correct
36 Correct 30 ms 968 KB Output is correct
37 Correct 209 ms 1132 KB Output is correct
38 Correct 715 ms 1236 KB Output is correct
39 Execution timed out 1119 ms 1076 KB Time limit exceeded
40 Halted 0 ms 0 KB -

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 336 KB Output is correct
2 Correct 17 ms 584 KB Output is correct
3 Correct 16 ms 336 KB Output is correct
4 Correct 12 ms 336 KB Output is correct
5 Correct 15 ms 1104 KB Output is correct
6 Correct 16 ms 336 KB Output is correct
7 Correct 18 ms 436 KB Output is correct
8 Correct 18 ms 336 KB Output is correct
9 Correct 17 ms 336 KB Output is correct
10 Correct 16 ms 976 KB Output is correct
11 Correct 16 ms 968 KB Output is correct
12 Correct 17 ms 1220 KB Output is correct
13 Correct 16 ms 1236 KB Output is correct
14 Correct 22 ms 336 KB Output is correct
15 Correct 31 ms 336 KB Output is correct
16 Correct 25 ms 336 KB Output is correct
17 Correct 22 ms 336 KB Output is correct
18 Correct 18 ms 336 KB Output is correct
19 Correct 18 ms 336 KB Output is correct
20 Correct 20 ms 336 KB Output is correct
21 Correct 26 ms 336 KB Output is correct
22 Correct 24 ms 336 KB Output is correct
23 Correct 28 ms 584 KB Output is correct
24 Correct 29 ms 504 KB Output is correct
25 Correct 32 ms 432 KB Output is correct
26 Correct 31 ms 336 KB Output is correct
27 Partially correct 242 ms 336 KB Output is partially correct
28 Partially correct 356 ms 336 KB Output is partially correct
29 Correct 33 ms 488 KB Output is correct
30 Correct 74 ms 336 KB Output is correct
31 Partially correct 132 ms 520 KB Output is partially correct
32 Correct 22 ms 336 KB Output is correct
33 Correct 21 ms 336 KB Output is correct
34 Correct 29 ms 336 KB Output is correct
35 Correct 25 ms 336 KB Output is correct
36 Correct 27 ms 436 KB Output is correct
37 Correct 27 ms 336 KB Output is correct
38 Partially correct 166 ms 468 KB Output is partially correct
39 Partially correct 223 ms 472 KB Output is partially correct
40 Correct 28 ms 336 KB Output is correct
41 Correct 52 ms 336 KB Output is correct
42 Partially correct 81 ms 336 KB Output is partially correct
43 Correct 14 ms 968 KB Output is correct
44 Correct 15 ms 980 KB Output is correct
45 Correct 19 ms 1136 KB Output is correct
46 Correct 18 ms 968 KB Output is correct
47 Partially correct 35 ms 1360 KB Output is partially correct
48 Partially correct 202 ms 956 KB Output is partially correct
49 Partially correct 674 ms 984 KB Output is partially correct
50 Execution timed out 1142 ms 972 KB Time limit exceeded
51 Halted 0 ms 0 KB -