#include <fstream>
#include <bits/stdc++.h>
#define N 100005
using namespace std;

ifstream fin("cmap.in");
ofstream fout("cmap.out");

int n;
double a[N],b[N];

int main()
{
    int i,j;
    double s,smin=1000000001;
    fin>>n;
    for(i=1; i<=n; ++i)
        fin>>a[i]>>b[i];
    for(i=1; i<n; ++i)
    {
        for(j=i+1; j<=n; ++j)
        {
            s=sqrt( (a[i]-a[j])*(a[i]-a[j]) + (b[i]-b[j])*(b[i]-b[j]) );
            if(s<smin) smin=s;
        }
    }
    fout<<fixed<<setprecision(6)<<smin;
    return 0;
}