#include <bits/stdc++.h>

using namespace std;
bool sortbysec(const pair<double, double> &a,const pair<double,double> &b)
{
    return (a.second < b.second);
}
int main()
{
    int n;
    cin>>n;
    vector<pair<double,double> > v;
    for(int i=0; i<n; i++)
    {
        double x,y;
        cin>>x>>y;
        v.push_back(make_pair(x,y));
    }
    sort(v.begin(),v.end(), sortbysec);

    double MIN=INT_MAX;
    for(int i=0; i<n; i++)
    {
        if(i<n-1)
        MIN=min(MIN,sqrt( ((v[i+1].first-v[i].first)*(v[i+1].first-v[i].first)) + ((v[i+1].second-v[i].second)*(v[i+1].second-v[i].second))));
        if(i==n-1)
        {
            MIN=min(MIN,sqrt( ((v[0].first-v[i+1].first)*(v[0].first-v[i+1].first)) + ((v[0].second-v[i+1].second)*(v[0].second-v[i+1].second))));
        }
    }
    cout<<fixed<<setprecision(2)<<MIN<<endl;
    return 0;
}