#include <fstream>
#include <cmath>
#include <iomanip>
using namespace std;
ifstream fin("cmap.in");
ofstream fout("cmap.out");
int i,n,j,x,y;
float dist,D=999999999;
struct date
{
	int x,y;
}v[1002];
int main()
{
    fin>>n;
    for(i=1;i<=n;i++)
    	fin>>v[i].x>>v[i].y;
	for(i=1;i<=n;i++)
	{
		for(j=1;j<=n;j++)
		{
			if(i!=j)
			{
				x=v[i].x-v[j].x;
				y=v[i].y-v[j].y;
				dist=x*x+y*y;
				dist=sqrt(dist);
				if(dist<D)
				D=dist;
			}
		}
	}
	fout<<setprecision(6)<<fixed<<D;
	return 0;
}