//Scuzati bulaneala
#include <bits/stdc++.h>
#define debug(x) cerr << #x << " " << x << "\n"

using namespace std;

pair <int,int> v[100001];
double distanta(pair <int,int> n, pair <int,int> m)
{
    pair <double,double> a = {n.first,n.second},b = {m.first,m.second};
    return sqrt((b.first - a.first) * (b.first - a.first) + (b.second - a.second) * (b.second - a.second));
}

set <pair <int,int> > s;
int main()
{
    ifstream cin("cmap.in");
    ofstream cout("cmap.out");
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n,i;
    cin >> n;
    for(i = 1; i <= n; i++)
    {
        cin >> v[i].first >> v[i].second;
        //s.insert(v[i]);
    }
    double minim = (double)(1 << 30);
    sort(v + 1,v + n + 1);
    int j = 1;
    for(i = 1; i <= n; i++)
    {

        while(v[i].first - v[j].first >= minim * minim)
        {
            s.erase({v[j].second,v[j].first});
            j++;
        }
        auto it1 = s.lower_bound({v[i].second - minim, v[i].first});
        auto it2 = s.upper_bound({v[i].second + minim, v[i].first});

        for (auto it = it1; it != it2; ++it)
        {
            int dx =  it->second;
            int dy = it->first;
            minim = min(minim, distanta({dx,dy},v[i]));
        }
        s.insert({v[i].second, v[i].first});
    }
    cout << fixed << setprecision(6) << minim;
    return 0;
}