#include <iostream>
#include <cstdio>
#include <vector>
#include <cmath>

using namespace std;

int a[100001],b[100001],c[100001],d[100001];

void intercl(int li,int lf)
{
    int m=(li+lf)/2,i,j,k;
    i=li;j=m+1;k=li;
    while(i<=m&&j<=lf)
        if(a[i]<a[j])
        {
            c[k]=a[i];
            d[k]=b[i];
            k++;
            i++;
        }
        else
        {
            c[k]=a[j];
            d[k]=b[j];
            k++;
            j++;
        }
    while(i<=m)
    {
        c[k]=a[i];
        d[k]=b[i];
        k++;
        i++;
    }
    while(j<=lf)
    {
        c[k]=a[j];
        d[k]=b[j];
        k++;
        j++;
    }
    for(i=li;i<=lf;i++)
    {
        a[i]=c[i];
        b[i]=d[i];
    }
}

void merge_sort(int li,int lf)
{
    if(li<lf)
    {
        int m=(li+lf)/2;
        merge_sort(li,m);
        merge_sort(m+1,lf);
        intercl(li,lf);
    }
}

double distanta(int x1,int y1,int x2,int y2)
{
    return sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));
}

double dist(int nr,int li,int lf)
{
    double aa,bb;
    double mn;
    if(nr==2)
        return distanta(c[li],d[li],c[lf],d[lf]);
    if(nr==3)
    {
        double segmin=distanta(c[li],d[li],c[li+1],d[li+1]);
        double l=distanta(c[li],d[li],c[lf],d[lf]);
        if(l<segmin) segmin=l;
        l=distanta(c[li+1],d[li+1],c[lf],d[lf]);
        if(l<segmin) segmin=l;
        return segmin;
    }
    aa=dist(nr/2,li,li+nr/2-1);
    bb=dist(nr/2+nr%2,li+nr/2,lf);
    if(aa<bb) mn=aa;
    else mn=bb;
    int i,j;
    double x=(c[li+nr/2-1]+c[li+nr/2])/2;
    double tz;
    for(i=li;i<=li+nr/2-1;i++)
    {
        if(x-c[i]<mn)
            for(j=li+nr/2;j<=lf;j++)
            {
                if(c[j]-x<mn)
                {
                    tz=distanta(c[i],d[i],c[j],d[j]);
                    if(tz<mn)
                        mn=tz;
                }
            }
    }
    return mn;
}

int main()
{
    FILE *f=fopen("cmap.in","r");
    FILE *g=fopen("cmap.out","w");
    int i,n;
    fscanf(f,"%d",&n);
    for(i=1;i<=n;i++)
        fscanf(f,"%d%d",&a[i],&b[i]);
    merge_sort(1,n);
    fprintf(g,"%f",dist(n,1,n));
    return 0;
}