#include <iostream>
#include <fstream>
#include <math.h>
#include <vector>
#include <algorithm>
#include <stdio.h>

using namespace std;

int n;
ifstream in("cmap.in");

struct punct
{
    long long x;
    long long y;
}v[100010];

bool sortY(punct a,punct b)
{
    return (a.y < b.y);
}

bool sortX(punct a, punct b)
{
    if(a.x < b.x)
    {
        return true;
    }

    if(a.x == b.x)
    {
        return sortY(a,b);
    }

    return false;
}

double myDistance(punct a1, punct a2)
{
    double d = (double) (a1.x - a2.x) * (a1.x - a2.x) + (a1.y - a2.y) * (a1.y - a2.y) ;
    d = sqrt(d);
    return d;
}

double firstCase(int left, int right)
{
    double d1,d2;
    d1 = myDistance(v[left], v[left+1]);

    for(int i = left; i < right ; i++ )
    {
        for(int j = i + 1 ; j<= right; j++)
        {
            d2 = myDistance(v[i], v[j]);
            if(d2 < d1)
            {
                d1 = d2;
            }
        }
    }
    sort(v+left, v+right + 1, sortY);
    return d1;
}

double secondCase(int left, int right, int middle, int distance)
{
    double d;
    vector < punct > vec;
    for(int i=left; i<middle; i++)
    {
        if(myDistance(v[i],v[middle]) < distance)
        {
            vec.push_back(v[i]);
        }
    }

    for(int i = middle + 1; i<= right; i++)
    {
        if(myDistance(v[i],v[middle]) < distance)
        {
            vec.push_back(v[i]);
        }
    }

    sort(vec.begin(), vec.end(), sortY);

    vector<punct>::iterator it = vec.begin();
    for(int i = 0; it+i != vec.end(); i++)
    {
        for(int j = i+1; it + j != vec.end();j++)
        {
            d = myDistance(*(it+i), *(it+j));
            if(distance > d)
            {
                distance = d;
            }
        }
    }

    return distance;
}

double devideAndConquer(int left, int right)
{
    double d;
    if(right - left <= 2)
    {
        d = firstCase(left, right);
        return d;
    }
    else
    {
        double s1,s2;
        int middle = left + (right - left) / 2;

        s1 = devideAndConquer(left, middle);
        s2 = devideAndConquer(middle + 1, right);
        if(s1>s2)
        {
            s1 = s2;
        }

        s2 = secondCase(left, right, middle, s1);
        if(s1<s2)
        {
            s1 = s2;
        }

        return s1;
    }
}

void read()
{
   in>>n;
   for(int i = 1 ; i<=n; i++)
   {
       in>>v[i].x>>v[i].y;
   }
}

void write(double d)
{
    FILE*g = fopen("cmap.out","w");
    fprintf(g, "%.6lf\n", d);
}
int main()
{
    read();
    sort(v+1,v+n+1, sortX);
    double d = devideAndConquer(1,n);
    write(d);
}