Submission #881003

#	Time	Username	Problem	Language	Result	Execution time	Memory
881003		TAhmed33	Odašiljači (COCI20_odasiljaci)	C++98	70 / 70	4 ms	348 KiB

odasiljaci

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int n;
pair <ll, ll> a[1001];
ll dist (int x, int y) {
    return (a[x].first - a[y].first) * (a[x].first - a[y].first) + (a[x].second - a[y].second) * (a[x].second - a[y].second);
}
ll b[1001]; bool vis[1001]; const ll inf = 1e18;
int main () { 
    cin >> n;
    for (int i = 1; i <= n; i++) cin >> a[i].first >> a[i].second;
    for (int i = 1; i <= n; i++) b[i] = inf - 1;
    ll mx = 0;
    for (int i = 1; i <= n; i++) {
        ll pos = -1, mn = inf;
        for (int j = 1; j <= n; j++) {
            if (vis[j]) continue;
            if (b[j] < mn) {
                mn = b[j];
                pos = j;
            }
        }
        if (i != 1) mx = max(mx, b[pos]);
        vis[pos] = 1;
        for (int j = 1; j <= n; j++) {
            if (!vis[j]) {
                b[j] = min(b[j], dist(pos, j));
            }
        }
    }
    cout << fixed << setprecision(7) << sqrt(mx) / 2 << '\n';
}

• Subtask 1: 70 / 70