#include <iostream>
#include <fstream>
#include <vector>
#include <iomanip>
#include <algorithm>
#include <cmath>

using namespace std;

struct Point {

 long long x, y;
 long long dist_sq(Point& b)
 {
  return (x - b.x) * (x - b.x) + (y - b.y) * (y - b.y);
 }
};

bool sort_x(Point& a, Point& b)
{
 if (a.x < b.x)
  return true;
 else
  return false;
}


bool sort_y(Point& a, Point& b)
{
 if (a.y < b.y)
  return true;
 else
  return false;
}

long long get_min_dist(long long d_min, vector<Point>& a)
{
 for (unsigned int i = 0; i < a.size() - 1; i++)
 {
  for (unsigned int j = i + 1; j < a.size() and j < i + 8; j++)
   if (a[i].dist_sq(a[j]) < d_min)
    d_min = a[i].dist_sq(a[j]);
 }
 return d_min;
}

long long find_closest_points(vector<Point>& a, vector<Point>& b, int st, int dr) {
 if (dr - st <= 3) {
  long long d_min = a[st].dist_sq(a[st + 1]);
  for (int i = st; i < dr; i++)
   for (int j = i + 1; j <= dr; j++)
    if (a[i].dist_sq(a[j]) < d_min)
     d_min = a[i].dist_sq(a[j]);
  return d_min;
 }
 else {
  int mijloc = (st + dr) / 2;
  vector<Point> ord_st, ord_dr;
  for (unsigned int i = 0; i < b.size(); i++)
   if (b[i].x <= a[mijloc].x)
    ord_st.push_back(b[i]);
   else
    ord_dr.push_back(b[i]);

  long long dist_st = find_closest_points(a, ord_st, st, mijloc);
  long long dist_dr = find_closest_points(a, ord_dr, mijloc + 1, dr);
  long long d_min;

  if (dist_st < dist_dr)
   d_min = dist_st;
  else
   d_min = dist_dr;

  vector<Point> fasie;
  for (unsigned int i = 0; i < b.size(); i++) {
   if (b[i].x > a[mijloc].x - sqrt(d_min) and b[i].x < a[mijloc].x + sqrt(d_min))
    fasie.push_back(b[i]);
  }
  return get_min_dist(d_min, fasie);
 }

}

int main()
{
 ifstream in("cmap.in");
 ofstream out("cmap.out");
 int n;
 in >> n;
 vector<Point> X(n), Y(n);
 for (int i = 0; i < n; i++)
 {
  in >> X[i].x >> X[i].y;
  Y[i].x = X[i].x;
  Y[i].y = X[i].y;
 }
 sort(X.begin(), X.end(), sort_x);
 sort(Y.begin(), Y.end(), sort_y);
 out << fixed << setprecision(6) << sqrt(find_closest_points(X, Y, 0, n - 1));
}