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

int x[100001],y[100001],n;

int main()
{
//freopen("a.in","r",stdin);
//freopen("a.out","w",stdout);
scanf("%d",&n);
double ans=1e8;
for (int i=1;i<=n;i++)
scanf("%d%d",&x[i],&y[i]);
for (int i=1;i<=n-1;i++)
for (int j=i+1;j<=n;j++)
ans=min(ans,sqrt(pow(x[i]-x[j],2)+pow(y[i]-y[j],2)));
printf("%.3lf",ans);
return 0;
}