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Submission #380443

# Submission time Handle Problem Language Result Execution time Memory
380443 2021-03-21T19:55:48 Z ruadhan Traffic (IOI10_traffic) C++14
50 / 100
 5000 ms 36972 KB 
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;

const ll INF = 2e12 + 2;
const int MAXN = 1e6 + 1;
ll congestion = 0;
// vector<int> adj[MAXN];
pair<int, vector<int>> adj[MAXN]; // population, adjacent cities
vector<int> population;
vector<bool> visited;

void dfs(int node)
{
    // cout << ", dfs on " << node << "\t";
    for (auto u : adj[node].second)
    {
        if (!visited[u])
        {
            // cout << ", processing " << u << " ";
            // congestion += population[u];
            congestion += adj[u].first;
            // cout << " it has weight " << adj[u].first << ", ";
            visited[u] = true;
            dfs(u);
        }
    }
    // cout << endl;
}

// int LocateCentre(int N, vector<int> P, vector<int> S, vector<int> D)
int LocateCentre(int N, int P[], int S[], int D[])
{
    ll ans = INF;
    int city = -1;
    // population = P;
    // population.insert(P, P + N);
    for (int i = 0; i < N - 1; i++)
    {
        adj[i].first = P[i];
        adj[S[i]].second.push_back(D[i]);
        adj[D[i]].second.push_back(S[i]);
    }
    adj[N - 1].first = P[N - 1];
    // for (int i = 0; i < N; i++)
    // {
    //     cout << adj[i].first << " ";
    // }

    // for (int i = 0; i < N; i++)
    // {
    //     cout << "i = " << i << ", ";
    //     for (auto u : adj[i].second)
    //         cout << u << " ";
    //     cout << endl;
    // }

    for (int i = 0; i < N; i++) // try city i
    {
        // cout << "i = " << i << ", ";
        visited.assign(N, false);
        visited[i] = true;
        ll currentWorst = 0;
        for (auto u : adj[i].second) // all outgoing edges have different congestion
        {
            congestion = adj[u].first;
            visited[u] = true;
            dfs(u);
            // cout << congestion << " ";
            currentWorst = max(currentWorst, congestion);
        }
        if (currentWorst < ans)
        {
            ans = currentWorst;
            city = i;
        }
        // ans = min(ans, currentWorst);
        // cout << endl;
    }
    return city;
}

// int main()
// {
//     // int n = 5;
//     // vector<int> p = {10, 10, 10, 20, 20};
//     // vector<int> s = {0, 1, 2, 3}; // edges
//     // vector<int> d = {2, 2, 3, 4};
//     // cout << LocateCentre(n, p, s, d) << endl;
//     ios::sync_with_stdio(false);
//     cin.tie(NULL);
//     int n;
//     cin >> n;
//     // vector<int> p(n), s(n - 1), d(n - 1);
//     int p[n], s[n - 1], d[n - 1];
//     for (auto &x : p)
//         cin >> x;
//     for (int i = 0; i < n - 1; i++)
//         cin >> s[i] >> d[i];

//     // cout << n << endl;
//     // for (int i = 0; i < n; i++)
//     //     cout << p[i] << " ";
//     // cout << endl;
//     // for (int i = 0; i < n - 1; i++)
//     //     cout << s[i] << " " << d[i] << endl;
//     cout << LocateCentre(n, p, s, d) << endl;
//     return 0;
// }

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 31724 KB Output is correct
2 Correct 22 ms 31596 KB Output is correct
3 Correct 22 ms 31596 KB Output is correct
4 Correct 25 ms 31596 KB Output is correct
5 Correct 22 ms 31616 KB Output is correct
6 Correct 22 ms 31596 KB Output is correct
7 Correct 22 ms 31596 KB Output is correct
8 Correct 22 ms 31596 KB Output is correct
9 Correct 23 ms 31596 KB Output is correct
10 Correct 22 ms 31596 KB Output is correct
11 Correct 22 ms 31596 KB Output is correct
12 Correct 22 ms 31596 KB Output is correct
13 Correct 22 ms 31596 KB Output is correct
14 Correct 24 ms 31596 KB Output is correct
15 Correct 22 ms 31596 KB Output is correct
16 Correct 21 ms 31596 KB Output is correct
17 Correct 21 ms 31596 KB Output is correct
18 Correct 22 ms 31628 KB Output is correct
19 Correct 22 ms 31616 KB Output is correct
20 Correct 23 ms 31596 KB Output is correct
21 Correct 25 ms 31596 KB Output is correct
22 Correct 22 ms 31596 KB Output is correct
23 Correct 22 ms 31616 KB Output is correct
24 Correct 23 ms 31596 KB Output is correct
25 Correct 22 ms 31724 KB Output is correct
26 Correct 22 ms 31724 KB Output is correct
27 Correct 23 ms 31724 KB Output is correct
28 Correct 23 ms 31724 KB Output is correct
29 Correct 23 ms 31724 KB Output is correct
30 Correct 24 ms 31724 KB Output is correct
31 Correct 24 ms 31724 KB Output is correct
32 Correct 24 ms 31724 KB Output is correct
33 Correct 25 ms 31724 KB Output is correct
34 Correct 22 ms 31596 KB Output is correct
35 Correct 29 ms 31852 KB Output is correct
36 Correct 26 ms 31724 KB Output is correct
37 Correct 27 ms 31724 KB Output is correct
38 Correct 28 ms 31744 KB Output is correct
39 Correct 29 ms 31724 KB Output is correct
40 Correct 29 ms 31724 KB Output is correct
41 Correct 30 ms 31724 KB Output is correct
42 Correct 31 ms 31744 KB Output is correct
43 Correct 22 ms 31596 KB Output is correct
44 Correct 22 ms 31596 KB Output is correct
45 Correct 22 ms 31596 KB Output is correct
46 Correct 22 ms 31596 KB Output is correct
47 Correct 22 ms 31596 KB Output is correct

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 31724 KB Output is correct
2 Correct 22 ms 31596 KB Output is correct
3 Correct 22 ms 31596 KB Output is correct
4 Correct 25 ms 31596 KB Output is correct
5 Correct 22 ms 31616 KB Output is correct
6 Correct 22 ms 31596 KB Output is correct
7 Correct 22 ms 31596 KB Output is correct
8 Correct 22 ms 31596 KB Output is correct
9 Correct 23 ms 31596 KB Output is correct
10 Correct 22 ms 31596 KB Output is correct
11 Correct 22 ms 31596 KB Output is correct
12 Correct 22 ms 31596 KB Output is correct
13 Correct 22 ms 31596 KB Output is correct
14 Correct 24 ms 31596 KB Output is correct
15 Correct 22 ms 31596 KB Output is correct
16 Correct 21 ms 31596 KB Output is correct
17 Correct 21 ms 31596 KB Output is correct
18 Correct 22 ms 31628 KB Output is correct
19 Correct 22 ms 31616 KB Output is correct
20 Correct 23 ms 31596 KB Output is correct
21 Correct 25 ms 31596 KB Output is correct
22 Correct 22 ms 31596 KB Output is correct
23 Correct 22 ms 31616 KB Output is correct
24 Correct 23 ms 31596 KB Output is correct
25 Correct 22 ms 31724 KB Output is correct
26 Correct 22 ms 31724 KB Output is correct
27 Correct 23 ms 31724 KB Output is correct
28 Correct 23 ms 31724 KB Output is correct
29 Correct 23 ms 31724 KB Output is correct
30 Correct 24 ms 31724 KB Output is correct
31 Correct 24 ms 31724 KB Output is correct
32 Correct 24 ms 31724 KB Output is correct
33 Correct 25 ms 31724 KB Output is correct
34 Correct 22 ms 31596 KB Output is correct
35 Correct 29 ms 31852 KB Output is correct
36 Correct 26 ms 31724 KB Output is correct
37 Correct 27 ms 31724 KB Output is correct
38 Correct 28 ms 31744 KB Output is correct
39 Correct 29 ms 31724 KB Output is correct
40 Correct 29 ms 31724 KB Output is correct
41 Correct 30 ms 31724 KB Output is correct
42 Correct 31 ms 31744 KB Output is correct
43 Correct 22 ms 31596 KB Output is correct
44 Correct 22 ms 31596 KB Output is correct
45 Correct 22 ms 31596 KB Output is correct
46 Correct 22 ms 31596 KB Output is correct
47 Correct 22 ms 31596 KB Output is correct
48 Correct 22 ms 31596 KB Output is correct
49 Correct 22 ms 31596 KB Output is correct
50 Correct 22 ms 31596 KB Output is correct
51 Correct 22 ms 31596 KB Output is correct
52 Correct 25 ms 31596 KB Output is correct
53 Correct 22 ms 31596 KB Output is correct
54 Correct 23 ms 31596 KB Output is correct
55 Correct 22 ms 31596 KB Output is correct
56 Correct 22 ms 31596 KB Output is correct
57 Correct 22 ms 31596 KB Output is correct
58 Correct 22 ms 31596 KB Output is correct
59 Correct 21 ms 31596 KB Output is correct
60 Correct 22 ms 31596 KB Output is correct
61 Correct 21 ms 31596 KB Output is correct
62 Correct 22 ms 31596 KB Output is correct
63 Correct 22 ms 31596 KB Output is correct
64 Correct 24 ms 31724 KB Output is correct
65 Correct 22 ms 31596 KB Output is correct
66 Correct 22 ms 31596 KB Output is correct
67 Correct 22 ms 31596 KB Output is correct
68 Execution timed out 5055 ms 36972 KB Time limit exceeded
69 Halted 0 ms 0 KB -

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 31724 KB Output is correct
2 Correct 22 ms 31596 KB Output is correct
3 Correct 22 ms 31596 KB Output is correct
4 Correct 25 ms 31596 KB Output is correct
5 Correct 22 ms 31616 KB Output is correct
6 Correct 22 ms 31596 KB Output is correct
7 Correct 22 ms 31596 KB Output is correct
8 Correct 22 ms 31596 KB Output is correct
9 Correct 23 ms 31596 KB Output is correct
10 Correct 22 ms 31596 KB Output is correct
11 Correct 22 ms 31596 KB Output is correct
12 Correct 22 ms 31596 KB Output is correct
13 Correct 22 ms 31596 KB Output is correct
14 Correct 24 ms 31596 KB Output is correct
15 Correct 22 ms 31596 KB Output is correct
16 Correct 21 ms 31596 KB Output is correct
17 Correct 21 ms 31596 KB Output is correct
18 Correct 22 ms 31628 KB Output is correct
19 Correct 22 ms 31616 KB Output is correct
20 Correct 23 ms 31596 KB Output is correct
21 Correct 25 ms 31596 KB Output is correct
22 Correct 22 ms 31596 KB Output is correct
23 Correct 22 ms 31616 KB Output is correct
24 Correct 23 ms 31596 KB Output is correct
25 Correct 22 ms 31724 KB Output is correct
26 Correct 22 ms 31724 KB Output is correct
27 Correct 23 ms 31724 KB Output is correct
28 Correct 23 ms 31724 KB Output is correct
29 Correct 23 ms 31724 KB Output is correct
30 Correct 24 ms 31724 KB Output is correct
31 Correct 24 ms 31724 KB Output is correct
32 Correct 24 ms 31724 KB Output is correct
33 Correct 25 ms 31724 KB Output is correct
34 Correct 22 ms 31596 KB Output is correct
35 Correct 29 ms 31852 KB Output is correct
36 Correct 26 ms 31724 KB Output is correct
37 Correct 27 ms 31724 KB Output is correct
38 Correct 28 ms 31744 KB Output is correct
39 Correct 29 ms 31724 KB Output is correct
40 Correct 29 ms 31724 KB Output is correct
41 Correct 30 ms 31724 KB Output is correct
42 Correct 31 ms 31744 KB Output is correct
43 Correct 22 ms 31596 KB Output is correct
44 Correct 22 ms 31596 KB Output is correct
45 Correct 22 ms 31596 KB Output is correct
46 Correct 22 ms 31596 KB Output is correct
47 Correct 22 ms 31596 KB Output is correct
48 Correct 22 ms 31724 KB Output is correct
49 Correct 22 ms 31596 KB Output is correct
50 Correct 22 ms 31596 KB Output is correct
51 Correct 22 ms 31596 KB Output is correct
52 Correct 22 ms 31596 KB Output is correct
53 Correct 23 ms 31724 KB Output is correct
54 Correct 22 ms 31596 KB Output is correct
55 Correct 25 ms 31596 KB Output is correct
56 Correct 22 ms 31596 KB Output is correct
57 Correct 21 ms 31596 KB Output is correct
58 Correct 22 ms 31596 KB Output is correct
59 Correct 22 ms 31596 KB Output is correct
60 Correct 21 ms 31596 KB Output is correct
61 Correct 22 ms 31724 KB Output is correct
62 Correct 22 ms 31596 KB Output is correct
63 Correct 22 ms 31596 KB Output is correct
64 Correct 22 ms 31596 KB Output is correct
65 Correct 22 ms 31596 KB Output is correct
66 Correct 21 ms 31596 KB Output is correct
67 Correct 24 ms 31596 KB Output is correct
68 Correct 22 ms 31596 KB Output is correct
69 Correct 25 ms 31596 KB Output is correct
70 Correct 21 ms 31596 KB Output is correct
71 Correct 22 ms 31596 KB Output is correct
72 Correct 22 ms 31596 KB Output is correct
73 Correct 22 ms 31744 KB Output is correct
74 Correct 25 ms 31596 KB Output is correct
75 Correct 22 ms 31724 KB Output is correct
76 Correct 23 ms 31724 KB Output is correct
77 Correct 23 ms 31724 KB Output is correct
78 Correct 27 ms 31724 KB Output is correct
79 Correct 24 ms 31724 KB Output is correct
80 Correct 24 ms 31724 KB Output is correct
81 Correct 24 ms 31596 KB Output is correct
82 Correct 25 ms 31724 KB Output is correct
83 Correct 26 ms 31724 KB Output is correct
84 Correct 27 ms 31724 KB Output is correct
85 Correct 27 ms 31724 KB Output is correct
86 Correct 29 ms 31724 KB Output is correct
87 Correct 30 ms 31852 KB Output is correct
88 Correct 31 ms 31724 KB Output is correct
89 Correct 32 ms 31724 KB Output is correct
90 Correct 35 ms 31724 KB Output is correct
91 Correct 35 ms 31724 KB Output is correct
92 Correct 22 ms 31596 KB Output is correct
93 Correct 37 ms 31724 KB Output is correct
94 Correct 24 ms 31724 KB Output is correct
95 Correct 31 ms 31724 KB Output is correct
96 Correct 22 ms 31596 KB Output is correct
97 Correct 22 ms 31724 KB Output is correct
98 Correct 21 ms 31596 KB Output is correct
99 Correct 22 ms 31596 KB Output is correct

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 31724 KB Output is correct
2 Correct 22 ms 31596 KB Output is correct
3 Correct 22 ms 31596 KB Output is correct
4 Correct 25 ms 31596 KB Output is correct
5 Correct 22 ms 31616 KB Output is correct
6 Correct 22 ms 31596 KB Output is correct
7 Correct 22 ms 31596 KB Output is correct
8 Correct 22 ms 31596 KB Output is correct
9 Correct 23 ms 31596 KB Output is correct
10 Correct 22 ms 31596 KB Output is correct
11 Correct 22 ms 31596 KB Output is correct
12 Correct 22 ms 31596 KB Output is correct
13 Correct 22 ms 31596 KB Output is correct
14 Correct 24 ms 31596 KB Output is correct
15 Correct 22 ms 31596 KB Output is correct
16 Correct 21 ms 31596 KB Output is correct
17 Correct 21 ms 31596 KB Output is correct
18 Correct 22 ms 31628 KB Output is correct
19 Correct 22 ms 31616 KB Output is correct
20 Correct 23 ms 31596 KB Output is correct
21 Correct 25 ms 31596 KB Output is correct
22 Correct 22 ms 31596 KB Output is correct
23 Correct 22 ms 31616 KB Output is correct
24 Correct 23 ms 31596 KB Output is correct
25 Correct 22 ms 31724 KB Output is correct
26 Correct 22 ms 31724 KB Output is correct
27 Correct 23 ms 31724 KB Output is correct
28 Correct 23 ms 31724 KB Output is correct
29 Correct 23 ms 31724 KB Output is correct
30 Correct 24 ms 31724 KB Output is correct
31 Correct 24 ms 31724 KB Output is correct
32 Correct 24 ms 31724 KB Output is correct
33 Correct 25 ms 31724 KB Output is correct
34 Correct 22 ms 31596 KB Output is correct
35 Correct 29 ms 31852 KB Output is correct
36 Correct 26 ms 31724 KB Output is correct
37 Correct 27 ms 31724 KB Output is correct
38 Correct 28 ms 31744 KB Output is correct
39 Correct 29 ms 31724 KB Output is correct
40 Correct 29 ms 31724 KB Output is correct
41 Correct 30 ms 31724 KB Output is correct
42 Correct 31 ms 31744 KB Output is correct
43 Correct 22 ms 31596 KB Output is correct
44 Correct 22 ms 31596 KB Output is correct
45 Correct 22 ms 31596 KB Output is correct
46 Correct 22 ms 31596 KB Output is correct
47 Correct 22 ms 31596 KB Output is correct
48 Correct 22 ms 31596 KB Output is correct
49 Correct 22 ms 31596 KB Output is correct
50 Correct 22 ms 31596 KB Output is correct
51 Correct 22 ms 31596 KB Output is correct
52 Correct 25 ms 31596 KB Output is correct
53 Correct 22 ms 31596 KB Output is correct
54 Correct 23 ms 31596 KB Output is correct
55 Correct 22 ms 31596 KB Output is correct
56 Correct 22 ms 31596 KB Output is correct
57 Correct 22 ms 31596 KB Output is correct
58 Correct 22 ms 31596 KB Output is correct
59 Correct 21 ms 31596 KB Output is correct
60 Correct 22 ms 31596 KB Output is correct
61 Correct 21 ms 31596 KB Output is correct
62 Correct 22 ms 31596 KB Output is correct
63 Correct 22 ms 31596 KB Output is correct
64 Correct 24 ms 31724 KB Output is correct
65 Correct 22 ms 31596 KB Output is correct
66 Correct 22 ms 31596 KB Output is correct
67 Correct 22 ms 31596 KB Output is correct
68 Execution timed out 5055 ms 36972 KB Time limit exceeded
69 Halted 0 ms 0 KB -