oj.uz

Submission #521095

# Submission time Handle Problem Language Result Execution time Memory
521095 2022-01-31T17:50:37 Z Lam_lai_cuoc_doi Race (IOI11_race) C++17
100 / 100
 376 ms 78284 KB 
#include <iostream>
#include <cstdio>
#include <map>
#include <functional>
#include <vector>
//#include "race.h"

using namespace std;

using ll = long long;
using ld = long double;

constexpr int N = 2e5 + 5;
constexpr int Inf = 1e9 + 7;
ll d[N];
vector<pair<int, int>> adj[N];
map<ll, int> cnt[N];
int ranks[N];

int Get(map<ll, int> &cnt, ll x)
{
    auto j = cnt.find(x);
    return j == cnt.end() ? Inf * 2 : j->second;
}

void Update(map<ll, int> &cnt, ll x, int y)
{
    auto j = cnt.find(x);
    if (j == cnt.end())
        cnt[x] = y;
    else
        j->second = min(j->second, y);
}

int best_path(int n, int k, int h[][2], int l[])
{
    int ans(Inf);

    function<void(int, int)> dfs = [&](int v, int p)
    {
        cnt[v][d[v]] = ranks[v];

        for (auto i : adj[v])
            if (i.first != p)
            {
                d[i.first] = d[v] + i.second;
                ranks[i.first] = ranks[v] + 1;
                dfs(i.first, v);

                if (cnt[v].size() < cnt[i.first].size())
                    swap(cnt[i.first], cnt[v]);

                for (auto j : cnt[i.first])
                    if (j.first - d[v] <= k)
                        ans = min(ans, Get(cnt[v], k - (j.first - d[v]) + d[v]) + j.second - 2 * ranks[v]);

                for (auto j : cnt[i.first])
                    if (j.first - d[v] <= k)
                        Update(cnt[v], j.first, j.second);

                cnt[i.first].clear();
            }
    };

    for (int i = 0; i < n - 1; ++i)
    {
        adj[h[i][0] + 1].emplace_back(h[i][1] + 1, l[i]);
        adj[h[i][1] + 1].emplace_back(h[i][0] + 1, l[i]);
    }

    ranks[1] = 1;
    dfs(1, -1);

    return ans >= Inf ? -1 : ans;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14412 KB Output is correct
2 Correct 8 ms 14412 KB Output is correct
3 Correct 8 ms 14392 KB Output is correct
4 Correct 7 ms 14396 KB Output is correct
5 Correct 7 ms 14412 KB Output is correct
6 Correct 7 ms 14412 KB Output is correct
7 Correct 7 ms 14372 KB Output is correct
8 Correct 7 ms 14412 KB Output is correct
9 Correct 7 ms 14396 KB Output is correct
10 Correct 7 ms 14412 KB Output is correct
11 Correct 7 ms 14396 KB Output is correct
12 Correct 7 ms 14404 KB Output is correct
13 Correct 7 ms 14400 KB Output is correct
14 Correct 8 ms 14392 KB Output is correct
15 Correct 7 ms 14412 KB Output is correct
16 Correct 7 ms 14412 KB Output is correct
17 Correct 7 ms 14412 KB Output is correct
18 Correct 7 ms 14356 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14412 KB Output is correct
2 Correct 8 ms 14412 KB Output is correct
3 Correct 8 ms 14392 KB Output is correct
4 Correct 7 ms 14396 KB Output is correct
5 Correct 7 ms 14412 KB Output is correct
6 Correct 7 ms 14412 KB Output is correct
7 Correct 7 ms 14372 KB Output is correct
8 Correct 7 ms 14412 KB Output is correct
9 Correct 7 ms 14396 KB Output is correct
10 Correct 7 ms 14412 KB Output is correct
11 Correct 7 ms 14396 KB Output is correct
12 Correct 7 ms 14404 KB Output is correct
13 Correct 7 ms 14400 KB Output is correct
14 Correct 8 ms 14392 KB Output is correct
15 Correct 7 ms 14412 KB Output is correct
16 Correct 7 ms 14412 KB Output is correct
17 Correct 7 ms 14412 KB Output is correct
18 Correct 7 ms 14356 KB Output is correct
19 Correct 7 ms 14392 KB Output is correct
20 Correct 8 ms 14412 KB Output is correct
21 Correct 8 ms 14512 KB Output is correct
22 Correct 8 ms 14432 KB Output is correct
23 Correct 8 ms 14412 KB Output is correct
24 Correct 8 ms 14412 KB Output is correct
25 Correct 8 ms 14540 KB Output is correct
26 Correct 8 ms 14412 KB Output is correct
27 Correct 8 ms 14408 KB Output is correct
28 Correct 9 ms 14540 KB Output is correct
29 Correct 9 ms 14540 KB Output is correct
30 Correct 9 ms 14540 KB Output is correct
31 Correct 9 ms 14516 KB Output is correct
32 Correct 8 ms 14536 KB Output is correct
33 Correct 9 ms 14540 KB Output is correct
34 Correct 8 ms 14536 KB Output is correct
35 Correct 8 ms 14540 KB Output is correct
36 Correct 8 ms 14540 KB Output is correct
37 Correct 8 ms 14468 KB Output is correct
38 Correct 9 ms 14532 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14412 KB Output is correct
2 Correct 8 ms 14412 KB Output is correct
3 Correct 8 ms 14392 KB Output is correct
4 Correct 7 ms 14396 KB Output is correct
5 Correct 7 ms 14412 KB Output is correct
6 Correct 7 ms 14412 KB Output is correct
7 Correct 7 ms 14372 KB Output is correct
8 Correct 7 ms 14412 KB Output is correct
9 Correct 7 ms 14396 KB Output is correct
10 Correct 7 ms 14412 KB Output is correct
11 Correct 7 ms 14396 KB Output is correct
12 Correct 7 ms 14404 KB Output is correct
13 Correct 7 ms 14400 KB Output is correct
14 Correct 8 ms 14392 KB Output is correct
15 Correct 7 ms 14412 KB Output is correct
16 Correct 7 ms 14412 KB Output is correct
17 Correct 7 ms 14412 KB Output is correct
18 Correct 7 ms 14356 KB Output is correct
19 Correct 91 ms 21956 KB Output is correct
20 Correct 104 ms 21888 KB Output is correct
21 Correct 83 ms 21840 KB Output is correct
22 Correct 91 ms 21840 KB Output is correct
23 Correct 75 ms 22080 KB Output is correct
24 Correct 80 ms 21944 KB Output is correct
25 Correct 84 ms 34640 KB Output is correct
26 Correct 60 ms 46148 KB Output is correct
27 Correct 143 ms 29588 KB Output is correct
28 Correct 335 ms 78284 KB Output is correct
29 Correct 293 ms 75592 KB Output is correct
30 Correct 143 ms 29632 KB Output is correct
31 Correct 147 ms 29764 KB Output is correct
32 Correct 176 ms 29788 KB Output is correct
33 Correct 159 ms 29248 KB Output is correct
34 Correct 128 ms 29876 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14412 KB Output is correct
2 Correct 8 ms 14412 KB Output is correct
3 Correct 8 ms 14392 KB Output is correct
4 Correct 7 ms 14396 KB Output is correct
5 Correct 7 ms 14412 KB Output is correct
6 Correct 7 ms 14412 KB Output is correct
7 Correct 7 ms 14372 KB Output is correct
8 Correct 7 ms 14412 KB Output is correct
9 Correct 7 ms 14396 KB Output is correct
10 Correct 7 ms 14412 KB Output is correct
11 Correct 7 ms 14396 KB Output is correct
12 Correct 7 ms 14404 KB Output is correct
13 Correct 7 ms 14400 KB Output is correct
14 Correct 8 ms 14392 KB Output is correct
15 Correct 7 ms 14412 KB Output is correct
16 Correct 7 ms 14412 KB Output is correct
17 Correct 7 ms 14412 KB Output is correct
18 Correct 7 ms 14356 KB Output is correct
19 Correct 7 ms 14392 KB Output is correct
20 Correct 8 ms 14412 KB Output is correct
21 Correct 8 ms 14512 KB Output is correct
22 Correct 8 ms 14432 KB Output is correct
23 Correct 8 ms 14412 KB Output is correct
24 Correct 8 ms 14412 KB Output is correct
25 Correct 8 ms 14540 KB Output is correct
26 Correct 8 ms 14412 KB Output is correct
27 Correct 8 ms 14408 KB Output is correct
28 Correct 9 ms 14540 KB Output is correct
29 Correct 9 ms 14540 KB Output is correct
30 Correct 9 ms 14540 KB Output is correct
31 Correct 9 ms 14516 KB Output is correct
32 Correct 8 ms 14536 KB Output is correct
33 Correct 9 ms 14540 KB Output is correct
34 Correct 8 ms 14536 KB Output is correct
35 Correct 8 ms 14540 KB Output is correct
36 Correct 8 ms 14540 KB Output is correct
37 Correct 8 ms 14468 KB Output is correct
38 Correct 9 ms 14532 KB Output is correct
39 Correct 91 ms 21956 KB Output is correct
40 Correct 104 ms 21888 KB Output is correct
41 Correct 83 ms 21840 KB Output is correct
42 Correct 91 ms 21840 KB Output is correct
43 Correct 75 ms 22080 KB Output is correct
44 Correct 80 ms 21944 KB Output is correct
45 Correct 84 ms 34640 KB Output is correct
46 Correct 60 ms 46148 KB Output is correct
47 Correct 143 ms 29588 KB Output is correct
48 Correct 335 ms 78284 KB Output is correct
49 Correct 293 ms 75592 KB Output is correct
50 Correct 143 ms 29632 KB Output is correct
51 Correct 147 ms 29764 KB Output is correct
52 Correct 176 ms 29788 KB Output is correct
53 Correct 159 ms 29248 KB Output is correct
54 Correct 128 ms 29876 KB Output is correct
55 Correct 18 ms 15432 KB Output is correct
56 Correct 13 ms 15052 KB Output is correct
57 Correct 54 ms 21920 KB Output is correct
58 Correct 46 ms 21620 KB Output is correct
59 Correct 85 ms 46232 KB Output is correct
60 Correct 270 ms 77016 KB Output is correct
61 Correct 155 ms 30020 KB Output is correct
62 Correct 147 ms 29892 KB Output is correct
63 Correct 182 ms 30004 KB Output is correct
64 Correct 376 ms 38464 KB Output is correct
65 Correct 160 ms 30404 KB Output is correct
66 Correct 270 ms 69572 KB Output is correct
67 Correct 146 ms 30544 KB Output is correct
68 Correct 284 ms 39616 KB Output is correct
69 Correct 301 ms 43072 KB Output is correct
70 Correct 271 ms 38724 KB Output is correct