Submission #1152277

#	Time	Username	Problem	Language	Result	Execution time	Memory
1152277		itslq	Odašiljači (COCI20_odasiljaci)	C++20	70 / 70	21 ms	16556 KiB

odasiljaci

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

#define int long long

signed main() {
    int N, M = 0;
    cin >> N;
    vector<pair<int, int>> coords(N);
    for (int i = 0; i < N; i++) cin >> coords[i].first >> coords[i].second;

    vector<vector<int>> dist(N, vector<int>(N));
    for (int i = 0; i < N; i++) {
        for (int j = 0; j < i; j++) {
            dist[i][j] = dist[j][i] = 
                        ((coords[i].first - coords[j].first) * (coords[i].first - coords[j].first) 
                        + (coords[i].second - coords[j].second) * (coords[i].second - coords[j].second));
        }
    }
    
    int U = N;
    pair<int, int> curr;
    vector<bool> visited(N);
    priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>> pq;
    
    pq.emplace(0, 0);
    while (U) {
        curr = pq.top();
        pq.pop();

        if (visited[curr.second]) continue;
        visited[curr.second] = 1;
        M = max(M, curr.first);
        U--;

        for (int j = 0; j < N; j++) {
            if (!visited[j]) {
                pq.emplace(dist[curr.second][j], j);
            }
        }
    }

    cout << fixed << setprecision(8) << sqrt((double) M) / 2;
}

• Subtask 1: 70 / 70