#include <iostream>
#include <cstdio>
#include <vector>
#include <algorithm>
#include <cmath>

#define nmax 100005
#define INF ~(1LL<<63)

using namespace std;

int n;
pair <int, int> X[nmax], Y[nmax];
vector <pair <int, int> > P;

long long dist(pair<int, int> a, pair<int, int> b)
{
    return 1LL*(a.first - b.first)*(a.first - b.first) + 1LL*(a.second - b.second)*(a.second - b.second);
}

void citire()
{
    scanf("%d",&n);
    for (int i=0; i<n; i++)
        scanf("%d %d",&X[i].first, &X[i].second);
    sort(X, X+n);

    for (int i=0; i<n; i++)
    {
        Y[i].first = X[i].second;
        Y[i].second = X[i].first;
    }

}

long long cmap(int st, int dr)
{
    if (dr - st <= 1)
        return INF;

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

    int mid = (st + dr)/2;
    long long minim = min(cmap(st, mid), cmap(mid, dr));

    P.clear();
    for(int i = st; i < dr; i++)
        if(abs(X[mid].first - Y[i].second) <= minim)
            P.push_back(Y[i]);

    for(int i = 0; i < P.size(); i++)
        for(int j = i+1; j < P.size()  && j-i < 8; j++)
            minim = min(minim, dist(P[i], P[j]));

    return minim;
}

int main()
{
    freopen("cmap.in","r",stdin);
    freopen("cmap.out","w",stdout);
    citire();
    long long d = cmap(0, n);
    double afis = sqrt(d);
    printf("%lf\n",afis);
    return 0;
}