#include<stdio.h>
#include<algorithm>
#include<math.h>
using namespace std;

#define INF 2000000000
#define NMAX 100003

struct punct
{
    int x,y;
};
int n;
punct v[NMAX],a[NMAX];


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

inline double dist(int i,int j)
{
    return sqrt((v[i].x-v[j].x)*(v[i].x-v[j].x) + (v[i].y-v[j].y)*(v[i].y-v[j].y));
}

inline double caz3(int l,int r)
{
    double sol=INF;
    if(r-l+1>=2)
        sol=dist(l,l+1);
    if(r-l+1==3)
    {
        sol=min(sol,dist(l,l+2));
        sol=min(sol,dist(l+1,l+2));
    }

    return sol;
}

double rez(int l,int r)
{
    double sol=INF;
    if(r-l+1<=3)
    {
        sol=caz3(l,r);
        return sol;
    }
    int med=(l+r)>>1;
    sol=min(rez(l,med) , rez(med+1,r));

    return sol;
}


int main()
{
    freopen("cmap.in","r",stdin);
    freopen("cmap.out","w",stdout);
    int i;
    double sol;
    scanf("%d",&n);
    for(i=1;i<=n;++i)
        scanf("%d%d",&v[i].x,&v[i].y);
    sort(v+1,v+1+n,cmp);

    sol=rez(1,n);

    printf("%lf\n",sol);

    return 0;
}