using namespace std;
#include<fstream>
#include<iomanip>
#include<cmath>
ifstream eu("cmap.in");
ofstream tu("cmap.out");
# define Nmax 100005
pair <int,int> P[Nmax];
int N;
void Read()
{
	eu>>N;
	for(int i=1;i<=N;i++)
		eu>>P[i].first>>P[i].second;
}
double dist(pair <int,int> a,pair <int,int> b)
{
	return sqrtl((a.first-b.first)*(a.first-b.first)+(a.second-b.second)*(a.second-b.second));
}
double Solve()
{
	double min=2000000000;
	for(int i=1;i<=N-1;i++)
		for(int j=i+1;j<=N;j++)
		{
			double a=dist(P[i],P[j]);
				if(a<min)
					min=a;
		}
	return min;
}
int main()
{
	Read();
	tu<<fixed<<setprecision(6)<<Solve();
	return 0;
}