#include <bits/stdc++.h>
using namespace std;
ifstream f("cmap.in");
ofstream g("cmap.out");
const int N =100002;
struct punct
{
    long long x,y;
};
int n;
punct v[N];
double minim=1000000000.0;
 double  dist(punct p1, punct p2)
{
    return sqrt((double)((p1.x-p2.x)*(p1.x-p2.x)+(p1.y-p2.y)*(p1.y-p2.y)));
}

int main()
{

    f>>n;
    int i,j,ci,cj;
    double d;
    for(i=1;i<=n;i++)
        f>>v[i].x>>v[i].y;
    for(i=1;i<n;i++)
        for(j=i+1;j<=n;j++)
        {
            d=dist(v[i],v[j]);
            if(d<minim)
            {
                ci=i;
                cj=j;
                minim=d;
            }
        }
    g<<minim;
    return 0;
}