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

using namespace std;

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

#define nmax 100100

struct punct
{
    int x,y;
};

punct v[nmax];
punct curr[nmax];
int n,i;

double dist(const punct &a,const punct &b)
{
    return (double)sqrt( 1LL * (a.x-b.x) * (a.x-b.x) + 1LL * (a.y-b.y) * (a.y-b.y) );
}

bool cmp0(const punct &a,const punct &b)
{
    if(a.y==b.y)
        return a.x<b.x;
    return a.y<b.y;
}

bool cmpcurr(const punct &a,const punct &b)
{
    if(a.x)
    return a.x<b.x;
}

double compute(int s,int d)
{
    if(d-s<3)
    {
        double mn = 1e9+1;
        int i,j;
        for(i=s; i<d; ++i)
            for(j=i+1; j<=d; ++j)
                mn = min(mn,dist(v[i],v[j]));
        return mn;
    }
    double mn = min(compute(s,(s+d)/2),compute((s+d)/2+1,d));
    int k = 0, i, j, ls;
    double mij = (v[(s+d)/2].y + v[(s+d)/2+1].y)/2;
    i=(s+d)/2;
    while(i>=s && mij-v[i].y<=mn)
        curr[k++]=v[i++];
    i=(s+d)/2+1;
    while(i<=d && v[i].y-mij<=mn)
        curr[k++]=v[i++];
    sort(curr,curr+k,cmpcurr);
    for(i=0; i<k; ++i)
        for(j=i+1; j<i+8 && j<k; ++j)
            mn=min(mn,dist(v[i],v[j]));
    return mn;
}

int main()
{
    fin>>n;
    for(i=1; i<=n; ++i)
        fin>>v[i].x>>v[i].y;
    sort(v+1,v+n+1,cmp0);
    fout<<setprecision(6)<<fixed<<compute(1,n);
}