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#include<fstream>
#include<algorithm>
#include<cmath>
#include<iomanip>
using namespace std;
ifstream f("cmap.in");
ofstream g("cmap.out");
int n,i;
double min1=1000000.0;
struct pie
{
int x;
int y;
}a[100001];
int cmp(pie a,pie b)
{
if(a.x!=b.x)
return a.x<b.x;
else
return a.y<b.y;
}
double dist(int poz)
{
return sqrt(((a[poz].x-a[poz+1].x)*(a[poz].x-a[poz+1].x))+((a[poz].y-a[poz+1].y)*(a[poz].y-a[poz+1].y)));
}
int main()
{
f>>n;
for(i=1;i<=n;i++)
f>>a[i].x>>a[i].y;
sort(a+1,a+n+1,cmp);
for(i=1;i<n;i++)
min1=min(min1,dist(i));
g<<fixed<<setprecision(6)<<min1;
return 0;
}