#include <iostream>
#include <fstream>
#include <algorithm>
#include <iomanip>
 
using namespace std;
 
const long double INF = 1e100;
 
struct punct
{
    punct(int x = 0, int y = 0)
    {
        this->x = x;
        this->y = y;
    }
    int x, y;
};
 
bool cmp_x(const punct &a, const punct &b)
{
    if(a.x == b.x)
        return a.y < b.y;
    return a.x < b.x;
}
 
bool cmp_y(const punct &a, const punct &b)
{
    if(a.y == b.y)
        return a.x < b.x;
    return a.y < b.y;
}
 
long double dist(const punct &a, const punct &b)
{
    int difX = a.x - b.x;
    int difY = a.y - b.y;
    return (1LL * difX * difX + 1LL * difY * difY);
}
 
const int nMax = 100005;
 
int n;
vector<punct> v;
 
void citire()
{
    ifstream in("cmap.in");
    in >> n;
    v.resize(n);
    for(int i = 0; i < n; ++i)
        in >> v[i].x >> v[i].y;
    in.close();
}
 
pair<long double, vector<punct> > GetRasp(int first, int last)
{
    int nrPoints = last - first + 1;
    vector<punct> y_sorted(nrPoints);
    if(nrPoints <= 3)
    {
        copy(v.begin() + first, v.begin() + last + 1, y_sorted.begin());
        sort(y_sorted.begin(), y_sorted.end(), cmp_y);
        long double ret = INF;
        for(int i = first; i < last; ++i)
            for(int j = i + 1; j <= last; ++j)
                ret = min(ret, dist(v[i], v[j]));
        return make_pair(ret, y_sorted);
    }
    int mid = (first + last) / 2;
    pair<long double, vector<punct> > retSt = GetRasp(first, mid);
    pair<long double, vector<punct> > retDr = GetRasp(mid+1, last);
 
    long double ret = min(retSt.first, retDr.first);
    merge(retSt.second.begin(), retSt.second.end(),
          retDr.second.begin(), retDr.second.end(),
          y_sorted.begin(), cmp_y);
 
    for(int i = 0; i < y_sorted.size(); ++i)
        for(int j = i + 1; j < y_sorted.size(); ++j)
        {
            if(j- i> 8)
                break;
            ret = min(ret, dist(y_sorted[i], y_sorted[j]));
        }
 
    return make_pair(ret, y_sorted);
}
 
void rezolvare()
{
    sort(v.begin(), v.end(), cmp_x);
    long double rasp = GetRasp(0, n-1).first;
 
    ofstream out("cmap.out");
    out << fixed << setprecision(8) << sqrt(rasp);
    out.close();
}
 
int main()
{
    citire();
    rezolvare();
    return 0;
}