#include <iostream>
#include <fstream>
#include <math.h>
#include <iomanip>
#include <algorithm>

using namespace std;

#define nmax 100099

struct punct
{
    double x;
    double y;
};

typedef  double ull;

punct v[nmax],z[nmax],w[nmax];

bool cmp(punct a,punct b)
{
    return a.x<b.x;
}

double distanta(punct a,punct b)
{
    return (b.x-a.x)*(b.x-a.x)+(b.y-a.y)*(b.y-a.y);
}

double dei (int l, int r)
{
    if(r-l+1==3)
    {
        if(v[l].y>v[l+1].y)
            swap(v[l],v[l+1]);
        if(v[l+1].y>v[l+2].y)
            swap(v[l+1],v[l+2]);
        if(v[l].y>v[l+1].y)
            swap(v[l],v[l+1]);
        return min(distanta(v[l],v[l+1]),min(distanta(v[l+1],v[l+2]),distanta(v[l],v[l+2])));
    }
    if(r-l+1==2)
    {
        if(v[l].y>v[l+1].y)
            swap(v[l],v[l+1]);
        return distanta(v[l],v[l+1]);
    }
    else
    {
        int m=(l+r)/2;
        double mediana=v[m].x;
        ull delta=min(dei(l,m),dei(m+1,r));
        int r2=0;
        int rdelta=sqrt(delta);
        int i,j,k;
        i=k=l;
        j=m+1;
        while(i<=m&&j<=r)
            if(v[i].y<v[j].y)
                z[k++]=v[i++];
            else
                z[k++]=v[j++];
        while(i<=m)
            z[k++]=v[i++];
        while(j<=r)
            z[k++]=v[j++];
        for(i=l;i<=r;i++)
        {
            v[i]=z[i];
            if(v[i].x-mediana<=rdelta&&v[i].x-mediana>=-rdelta)
                w[++r]=v[i];
        }
        for(i=1;i<=r2;i++)
        {
            j=min(r2,i+7);
            for(k=i+1;k<=j;k++)
                delta=min(delta,distanta(w[i],w[k]));
        }
        return delta;
    }
}


int main()
{
    ifstream f("cmap.in.txt");
    ofstream o("cmap.out.txt");
    int n,i;
    f>>n;
    for(i=1;i<=n;i++)
        f>>v[i].x>>v[i].y;
    sort(v+1,v+n+1,cmp);
    o<<setprecision(6)<<fixed<<sqrt(dei(1,n));
    f.close();
    o.close();
}