#include <algorithm>
#include <cmath>
#include <cstdio>
#include <fstream>
#include <iomanip>
using namespace std;
FILE*f=freopen("cmap.in","r",stdin);
ofstream g("cmap.out");
char buff[1048576];
int pos=0,n,i,j;
long long dmin,dd;
struct gigi
{
    int x,y;
} v[100002];
struct cmp
{inline bool operator () (gigi a,gigi b) {return(a.y<b.y);}
};

inline long long dist(gigi a,gigi b)
{
    return ((long long)((long long)(a.x-b.x)*(a.x-b.x)+(long long)(a.y-b.y)*(a.y-b.y)));
}
inline void read(int &nr)
{   int semn=1;
    while(buff[pos] < '0' || buff[pos] > '9') if(++pos == 1048576) fread(buff,  1,1048576, stdin), pos = 0;
    nr = 0;
    if(buff[pos-1]=='-') semn=-1;
    while('0' <= buff[pos] && buff[pos] <= '9')
    {
        nr = (nr<<1)+(nr<<3)+ buff[pos] - '0';
        if(++pos == 1048576) fread(buff, 1,1048576, stdin), pos = 0;
    }
    nr*=semn;
}
int main()
{
    read(n);
    for(i=1; i<=n; i++)
    {
        read(v[i].x);
        read(v[i].y);
    }
    sort(v+1,v+n+1,cmp());
    dmin=(1LL<<62);
    for(i=n-1; i>=1; i--)
        for(j=i+1; j<=i+3 && j<=n; j++)
        {
            dd=dist(v[i],v[j]);
            if(dmin>dd) dmin=dd;
        }
    g<<setprecision(6)<<fixed;
    g<<sqrt(dmin);
}