#include <fstream>
#include <vector>
#include <cmath>
#include <algorithm>
#include <iomanip>
using namespace std;

///brute

struct punct{
	int x, y;
};

int N;
double distMin;

bool cmp(punct a, punct b){
	if (a.x!=b.x)
		return a.x<b.x;
	return a.y<b.y;
}

double distanta(punct a, punct b){
	return sqrt((a.x-b.x)*(a.x-b.x)+(a.y-b.y)*(a.y-b.y));
}

int main(){
	fstream f;

	f.open("cmap.in", ios_base::in);
	f >> N;
	vector<punct> P(N);
	for (int i=0; i<N; i++)
		f >> P[i].x >> P[i].y;
	f.close();

	sort(P.begin(), P.end(), cmp);

	double dist;
	distMin=distanta(P[0], P[1]);
	for (int i=0; i<N-1; i++)
		for (int j=i+1; j<N; j++){
			dist=distanta(P[i], P[j]);
			distMin=min(distMin, dist);
			if (dist>distMin)
				break;
		}

	f.open("cmap.out", ios_base::out);
	f << fixed << setprecision(6) << distMin << '\n';
	f.close();

	return 0;
}