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Submission #991075

# Submission time Handle Problem Language Result Execution time Memory
991075 2024-06-01T08:27:00 Z borisAngelov Traffic (IOI10_traffic) C++17
0 / 100
 5 ms 33116 KB 
#include "traffic.h"
#include <bits/stdc++.h>

using namespace std;

const int maxn = 1000005;
const long long inf = (1LL << 60);

int n;
int a[maxn];

vector<int> g[maxn];

long long ans[maxn];
long long subtreeSum[maxn];
long long down[maxn];

void dfs(int node, int par, int dep)
{
    down[node] = 0;
    subtreeSum[node] = a[node];

    for (int i = 0; i < g[node].size(); ++i)
    {
        int to = g[node][i];

        if (to != par)
        {
            dfs(to, node, dep + 1);
            subtreeSum[node] += subtreeSum[to];
            down[node] = max(down[node], subtreeSum[to]);
        }
    }
}

int LocateCentre(int N, int pp[], int S[], int D[])
{
    n = N;

    for (int i = 1; i <= n; ++i)
    {
        a[i] = pp[i - 1];

        if (i == n)
        {
            break;
        }

        int x = S[i - 1];
        int y = D[i - 1];

        ++x;
        ++y;

        g[x].push_back(y);
        g[y].push_back(x);
    }

    long long ans = inf;

    for (int i = 1; i <= n; ++i)
    {
        dfs(i, -1, 0);
        ans = min(ans, down[i]);
    }

    return ans;
}

Compilation message

traffic.cpp: In function 'void dfs(int, int, int)':
traffic.cpp:23:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for (int i = 0; i < g[node].size(); ++i)
      |                     ~~^~~~~~~~~~~~~~~~

Subtask #1
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 33116 KB Output is correct
2 Incorrect 5 ms 33116 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 33116 KB Output is correct
2 Incorrect 5 ms 33116 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 33116 KB Output is correct
2 Incorrect 5 ms 33116 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 33116 KB Output is correct
2 Incorrect 5 ms 33116 KB Output isn't correct
3 Halted 0 ms 0 KB -