#include <iostream>
#include <fstream>
#include <vector>
#include <algorithm>
#include <cmath>
#include <iomanip>
using namespace std;

struct Point {
    int x, y;
};

bool cmp(Point a, Point b) {
    return a.x < b.x;
}

long long sqlong(long long x) {
    return x*x;
}

long long dist(Point a, Point b) {
    return sqlong(a.x-b.x)+sqlong(a.y-b.y);
}

long long minDist(vector<Point>::iterator a, vector<Point>::iterator b) {
    long long d;
    vector<Point>::iterator i, j;
    if (b-a<=3) {
        d = dist(*a, *(a+1));
        for (i = a; i < b-1; i++) {
            for (j = i+1; j < b; j++) {
                if (d > dist(*i, *j)) {
                    d = dist(*i, *j);
                }
            }
        }
        return d;
    }
    int n = (b-a)/2;
    d = min(minDist(a, a+n), minDist(a+n, b));
    for (i = a; i<a+n; i++) {
        for (j = a+n; j<b && sqlong((*i).x-(*j).x)<d; j++) {
            d = min(d, dist(*i, *j));
        }
    }
    return d;
}

main() {
    ifstream cin("cmap.in");
    ofstream cout("cmap.out");
    int n;
    cin>>n;
    vector<Point> a(n);
    for (int i = 0; i < n; i++) {
        cin>>a[i].x>>a[i].y;
    }
    sort(a.begin(), a.end(), cmp);
    cout<<fixed;
    cout<<setprecision(9)<<sqrt(minDist(a.begin(), a.end()));

}