#include<fstream.h>
#include<math.h>
ifstream fin("cmap.in");
ofstream fout("cmap.out");
long n;
long long x[100000],y[100000];
int main()
{
	long i,j;
	float d;
	long min=100000;
	fin>>n;
	for(i=1;i<=n;i++)
		fin>>x[i]>>y[i];
	for(i=1;i<n;i++)
		for(j=i+1;j<=n;j++)
			if((x[i]-x[j])*(x[i]-x[j])+(y[i]-y[j])*(y[i]-y[j])<min)
			{	
				min=(x[i]-x[j])*(x[i]-x[j])+(y[i]-y[j])*(y[i]-y[j]);
				d=sqrt(min);
			}
	fout<<d<<'\n';
	return 0;
}