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#include<iostream>
#include<fstream.h>
#include<math.h>
ifstream fin ("cmap.in");
ofstream fout ("cmap.out");
struct coordonate
{
int x,y;
}
v[101];
int i,j,n,d1,d2;
float min ,d;
int main ()
{
fin>>n;
float min=100000;
for(i=1;i<=n;i++)
fin>>v[i].x>>v[i].y;
for(i=1;i<n;i++)
{
for(j=i+1;j<=n;j++)
{
d1= (v[j].x-v[i].x ) * (v[j].x-v[i].x );
d2=(v[j].y-v[i].y ) * (v[j].y-v[i].y );
d= sqrt( d1+d2 );
}
if( d < min )
min=d;
}
fout << min;
return 0;
}