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




vector < pair <long long, long long> > V(100005), X, Y;

long long dist(const pair <long long, long long > &a, const pair <long long, long long> &b) {
    return (a.first - b.first) * (a.first - b.first) + (a.second - b.second) * (a.second - b.second);
}

long long go(int st, int dr, vector < pair <long long, long long > >& X, vector < pair <long long , long long > >& Y) {

         if (dr - st == 1 )
    {
        if (Y[st] > Y[st + 1])
        swap(Y[st], Y[st + 1]);
        return dist(X[st], X[st + 1]);
    }

        if (dr - st == 2)
    {
        if (Y[st] > Y[st + 1])
        swap(Y[st], Y[st + 1]);
        if (Y[st + 1] > Y[dr])
        swap(Y[st + 1], Y[dr]);
        if (Y[st] > Y[st + 1])
        swap(Y[st], Y[st + 1]);
        return min(dist(X[st], X[st + 1]),min(dist(X[st],X[dr]),dist(X[st],X[st+1])));
    }

    int mid = (st + dr) / 2;
    long long solution = min(go(st, mid, X, Y), go(mid + 1, dr, X, Y));


    merge(Y.begin() + st, Y.begin() + mid, Y.begin() + mid , Y.begin() + dr + 1, V.begin());
    copy(V.begin(), V.begin() + (dr - st) + 1, Y.begin() + st);



    int v_size = 0;
    for (int i = st; i < dr; ++ i) if (abs(Y[i].second - X[mid].first) <= solution)
        V[v_size ++] = Y[i];

    for (int i = 0; i < v_size - 1; ++ i) {
        for (int j = i + 1; j < v_size && j - i < 8; ++ j)
            solution = min(solution, dist(V[i], V[j]));
    }
    return solution;
}

int main(void) {
    int n;
    ifstream in("cmap.in");
    in>>n;

    X.resize(n), Y.resize(n);
    for (int i = 0; i <  X.size(); ++ i)
        in>>X[i].first>>X[i].second;

    in.close();

    sort(X.begin(), X.end());
    for (int i = 0; i <  X.size(); ++ i)
        Y[i] = make_pair(X[i].second, X[i].first);

    ofstream out("cmap.out");
    out << fixed << setprecision(6) << sqrt(go(0, X.size() - 1, X, Y)) << "\n";
    out.close();
    return 0;
}