#include<iostream>
#include<fstream>
#include<cmath>
using namespace std;
double calcul(int xa, int ya, int xb, int yb)
{
    return sqrt((double)((long long)(xa-xb)*(xa-xb)+(long long)(ya-yb)*(ya-yb)));
}
int main()
{
    int i,j,N;
	
    ifstream fin("cmap.in");
    ofstream fout("cmap.out");
    fin>>N;
	int x,y,a[N+9], b[N+9];
    for(i=1;i<=N;i++)
    {
        fin>>x>>y;
        a[i]=x;
        b[i]=y;
    }
    double nr,nrfinal;
	nrfinal=calcul(a[1],b[1],a[2],b[2]);
    for(i=1;i<N;i++)
    {
        for(j=i+1;j<=N;j++)
        {
            nr=calcul(a[i],b[i],a[j],b[j]);
            if(nr<nrfinal)
            {
                nrfinal=nr;
            }
        }
    }
    fout<<nrfinal;
    fin.close();
    fout.close();
    return 0;
}