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

using namespace std;

ifstream fin("cmap.in");
ofstream fout("cmap.out");

const long long infinit = 4e18;

struct triplet
{
    pair<long long,long long> p1,p2;

    long long distanta;
};


void interclasare(int p, int m, int q, vector< pair<long long,long long> > & v)
{
    vector< pair<long long,long long> > aux;

    int i = p, j = m;

    while(i<m && j<q)
        if(v[i].first <= v[j].first)
            aux.push_back(v[i++]);
        else
            aux.push_back(v[j++]);

    while(i<m)
        aux.push_back(v[i++]);

    while(j<q)
        aux.push_back(v[j++]);

    for(int i=0; i < (int)aux.size(); i++)
        v[p+i] = aux[i];
}

long long dist(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));
}

triplet DI(int st, int dr, vector< pair<long long,long long> > & v, vector< pair<long long,long long> > & u)
{
    if(dr-st < 2)
    {
        triplet inf;

        inf.distanta = infinit;

        inf.p1 = {infinit,infinit};

        inf.p2 = {infinit,infinit};

        return inf;
    }

    if(dr-st == 2)
    {
        if(u[st].first > u[dr-1].first)
            swap(u[st],u[dr-1]);

        triplet d;

        d.distanta = dist(v[st],v[dr-1]);

        d.p1 = v[st];

        d.p2 = v[dr-1];

        return d;
    }

    int m=(st+dr)/2;

    triplet D1 = DI(st, m, v, u);

    triplet D2 = DI(m, dr, v, u);

    triplet D_min;

    if(D1.distanta < D2.distanta)
        D_min = D1;
    else
        D_min = D2;

    interclasare(st, m, dr, u);

    vector< pair<long long,long long> > proxim;

    for(int i=st ;i < dr; i++)
        if(abs(u[i].second-v[m].first) <= D_min.distanta)
            proxim.push_back(u[i]);

    for(int i=0; i < (int)proxim.size()-1; i++)
        for(int j=i+1; j < (int)proxim.size() && j-i<8 ; j++)
            if(D_min.distanta > dist(proxim[i],proxim[j]))
            {
                D_min.distanta = dist(proxim[i],proxim[j]);

                D_min.p1.first = proxim[i].second;

                D_min.p1.second = proxim[i].first;

                D_min.p2.first = proxim[j].second;

                D_min.p2.second = proxim[j].first;
            }

    return D_min;
}

int main()
{
    int n;

    fin>>n;

    vector< pair<long long,long long> > v(n);

    for(int i=0; i<n; i++)
        fin>>v[i].first>>v[i].second;

    sort(v.begin(), v.end());

    vector< pair<long long,long long> > u(n);

    for(int i=0; i<n; i++)
    {
        u[i].first = v[i].second;

        u[i].second = v[i].first;
    }

    triplet mini = DI(0, n, v, u);

    fout<<fixed<<setprecision(6)<<sqrt(mini.distanta);

    return 0;
}