#include <fstream>
#include <iomanip>
#include <vector>
#include <cmath>
#include <algorithm>
using namespace std;
ifstream cin("cmap.in");
ofstream cout("cmap.out");


const long long inf=4e18;

int n;
vector<pair<long long,long long> > x;
long long calc(const pair<long long,long long> a,const pair<long long,long long> b){
 return ((a.first-b.first)*(a.first-b.first) + (a.second-b.second)*(a.second-b.second));
}

long long solve(int st,int dr)
{
 if(dr-st<=3){
  long long ans=inf;
  for (int i=st;i<dr;i++)
   for (int j=i+1;j<=dr;j++)
    ans=min(ans,calc(x[i],x[j]));
  return ans;
 }
 int mij=(st+dr)/2;
 long long best=min(solve(st,mij),solve(mij+1,dr));

 vector<pair<int,int> > aux;
 for(int i=st;i<=dr;++i)
  if(best>=abs(x[i].first-x[mij].first))
   aux.push_back(x[i]);
 int counter=aux.size();
 sort(aux.begin(),aux.end(), [](auto &left, auto &right) {
    return left.second < right.second;
});
 for(int i=0;i<counter-1;++i)
  for(int j=i+1;j<counter&&(j-i<8);++j)
   best=min(calc(aux[i],aux[j]),best);
 return best;
}

int main()
{
  int i;
  cin>>n;
  x.resize(n+1);
  for(i=1;i<=n;i++)
   cin>>x[i].first>>x[i].second;
  sort(x.begin(),x.end());
  cout<<fixed<<setprecision(6)<<sqrt(solve(1,n));
  return 0;
}