#include <fstream>
#include <iomanip>
#include <set>
#include <vector>
#include <math.h>

int points;

typedef std::pair<double, double> point;
std::set<point> v;

void read();
void resolve();
double dist(const point, const point);

main(){
    read();
    resolve();

    return 0;
}

void read(){
    std::ifstream f("cmap.in");
    f>>points;
    int x, y;
    for (int i=0; i<points; i++)
    {
        f>>x>>y;
        v.insert(point(x,y));
    }
    f.close();
}
void resolve() {
    typedef std::set<point>::iterator iterable;
    double min_dist = dist(*v.begin(), *v.end());
    for (iterable i=v.begin(); i!=(--v.end()); i++)
    {
        iterable i2 = i;
        ++i2;
        double d = dist(*i, *i2);
        if (d<min_dist) min_dist = d;
    }
    for (iterable i=v.begin(); i!=(--v.end()); i++){
        iterable gt = v.upper_bound({i->first + min_dist, 0});
        iterable lt = v.lower_bound({i->first - min_dist, 0});
        for (iterable i2 = lt; i2!=gt; i2++){
            if (*i2!=*i) {
                double d = dist(*i, *i2);
                if (d<min_dist) min_dist = d;
            }

        }

    }
    std::ofstream f("cmap.out");

    f<<std::fixed<<std::setprecision(6)<<min_dist<<std::endl;
    f.close();
}

double dist(const point a, const point b){
    return sqrt((a.first - b.first)*(a.first - b.first) + (a.second - b.second)*(a.second- b.second));

}