#include <bits/stdc++.h>
using namespace std;
ifstream f("cmap.in");
ofstream g("cmap.out");
float minim=10000;
float s;
int x[1000];
int y[1000];
int main()
{
int i,j;
int n;
f>>n;
for(i=1;i<=n;i++)
    f>>x[i]>>y[i];
for(i=1;i<n;i++)
    for(j=i+1;j<=n;j++)
{
    s=(x[i]-x[j])*(x[i]-x[j])+(y[i]-y[j])*(y[i]-y[j]);
    s=sqrt(s);
    if(s<minim)
        minim=s;
}
g<<setprecision(8)<<minim;
    return 0;
}