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#include <iostream>
#include <fstream>
#include <math.h>
using namespace std;
ifstream fin("cmap.in");
ofstream fout("cmap.out");
long long x[1000],y[1000];
int n;
double minim=1000000000;
int main()
{
fin>>n;
for(int i=1;i<=n;i++)
{
fin>>x[i]>>y[i];
}
for(int i=1;i<=n;i++)
for(int j=i+1;j<=n;j++)
{
double a=(x[i]-x[j])*(x[i]-x[j])+(y[i]-y[j])*(y[i]-y[j]);
if(a<minim)
minim=a;
}
fout.precision(20);
fout<<sqrt(minim);
return 0;
}