Submission #541512

#	Time	Username	Problem	Language	Result	Execution time	Memory
541512		adespawn	Mousetrap (CEOI17_mousetrap)	C++14	25 / 100	776 ms	69516 KiB

mousetrap

#include <bits/stdc++.h>
using namespace std;

vector<int> sc[1000006];

long long solve(int w, int f)
{
    priority_queue<int> k;
    for (auto i : sc[w])
    {
        if (i == f)
            continue;
        k.push(solve(i, w));
    }
    while (k.size() < 2)
        k.push(0);
    k.pop();
    return sc[w].size() - 1 + k.top();
}

int main()
{
    ios_base::sync_with_stdio(0);
    int n, m, k;
    cin >> n >> m >> k;
    for (int i = 1; i < n; i++)
    {
        int a, b;
        cin >> a >> b;
        sc[a].push_back(b);
        sc[b].push_back(a);
    }
    cout << solve(k, m);
}

• Subtask 1: 0 / 20
• Subtask 2: 25 / 25
• Subtask 3: 0 / 20
• Subtask 4: 0 / 35