#include <bits/stdc++.h>

using namespace std;
ifstream fin("cmap.in");
ofstream fout("cmap.out");
struct pct
{
    long long x,y;
} v[100100];
int n;
double minim;
int ver[100100];
bool comp(pct a, pct b)
{
    if(a.x!=b.x)return a.x<b.x;
    else return a.y<b.y;
}
double distanta(int i, int j)
{
    pct a=v[i];
    pct b=v[j];
    return sqrt((a.x-b.x)*(a.x-b.x)+(a.y-b.y)*(a.y-b.y));
}
double comb(int s, int  d)
{
    int nr=0;
    int mij=(s+d)/2;
    for(int i=s; i<=d; i++)
    {
        if((v[mij].x-v[i].x)<minim&&(v[mij].y-v[i].y)<minim)
        {
            ver[++nr]=i;
        }
    }
    for(int i=1; i<=nr; i++)
    {
        for(int j=i+1; j<=nr; j++)
        {
            minim=min(minim,distanta(ver[i],ver[j]));

        }
    }
}
double divide(int s, int d)
{
    if(d-s<=2)
    {
        minim=distanta(s,s+1);
        if(d-s==2)
        {
            minim=min(minim,min(distanta(s+1,s+2),distanta(s,s+2)));

        }
        return minim;
    }
   int   mij=(s+d)/2;
    minim=min(divide(s,mij),divide(mij+1,d));
    minim=min(minim,comb(s,d));
    return minim;
}
int main()
{
    fin>>n;
    for(int i=1; i<=n; i++)
    {
        fin>>v[i].x>>v[i].y;
    }
    sort(v+1,v+n+1,comp);
    divide(1,n);
    fout<<setprecision(6)<<fixed<<minim;
    return 0;
}