#include <bits/stdc++.h>
using namespace std;
#define ll long long
const ll nmax = 1e5;
pair<ll, ll> a[nmax + 5];
ll n;
long double ans = 1e18;
double tinh (pair<int, int> a, pair<int, int> b)
{
    return sqrt((a.first - b.first) * (a.first - b.first) + (a.second - b.second) * (a.second - b.second));
}
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n;
    for (ll i = 1; i <= n; ++i) cin >> a[i] . first >> a[i] . second;
    for (ll i = 1; i <= n; ++i)
    {
        for (ll j = i + 1; j <= n; ++j)
        {
            long double c = tinh(a[i], a[j]);
            ans = min(ans, c);
        }
    }
    cout << setprecision(3) << fixed << ans;
    return 0;
}