#include <bits/stdc++.h>
#define NMAX 100006
using namespace std;
ifstream  fin("cmap.in");
ofstream fout("cmap.out");
int n;

struct punct
{
    double x,y;
}v[NMAX];

void citire()
{
    fin>>n;

    for(int i=1; i<=n; i++)
    {
        fin>>v[i].x>>v[i].y;
    }
}

double dist(punct a, punct b)
{
    return sqrt((a.x-b.x)*(a.x-b.x)+(a.y-b.y)*(a.y-b.y));
}

int main()
{
    citire();

    double dmin=10000000000;
    dmin=dmin*100000000;

    for(int i=1; i<n; i++)
    {
        for(int j=i+1; j<=n; j++)
        {
            double d=dist(v[i],v[j]);
            dmin=min(dmin,d);
        }
    }

    fout<< fixed << setprecision(5) << dmin << "\n";

    return 0;
}