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#include <iostream>
#include <bits/stdc++.h>
#include <limits>
#include <vector>
#include <algorithm>
#include <fstream>
#include <climits>
using namespace std;
ifstream fin("cmap.in");
ofstream fout("cmap.out");
vector <pair<long long,long long> > v;
long long get_distance(pair <long long,long long> a,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 divide(long long st,long long dr)
{
long long m, dist_min;
if(dr-st<=3)
{
long long dist = LLONG_MAX ;
for(int i=st; i<=dr; i++)
for(int j=i+1; j<=dr; j++)
dist = min(dist,get_distance(v[i],v[j]));
return dist;
}
m = st + (dr - st) / 2;
long long dist_s = divide(st,m);
long long dist_d = divide(m+1,dr);
dist_min = min(dist_s,dist_d);
vector < pair<long long,long long> > band;
for(int i=st; i<=dr; i++)
if(abs(v[m].first-v[i].first)<dist_min)
band.push_back({v[i].second,v[i].first});
sort(band.begin(),band.end());
for(int i=0; i<band.size(); i++)
{
for(int j=i+1; j<band.size() && j < i + 8; j++)
{
long long dist = get_distance(band[i],band[j]);
if(dist < dist_min)
dist_min = dist;
}
}
return dist_min;
}
int main()
{
int n;
long long x,y,dist_min;
fin>>n;
for(int i = 1; i <= n; i++)
{
fin>>x>>y;
v.push_back({x,y});
}
sort(v.begin(),v.end());
dist_min = divide(0,n-1);
fout<<fixed<<setprecision(6)<<sqrt((double)dist_min);
fin.close();
fout.close();
return 0;
}