#include <bits/stdc++.h>

using namespace std;
typedef pair <long long, long long> pairll;
ifstream fi("cmap.in");
ofstream fo("cmap.out");
int N;
pairll P[100001];
int lef;
set <pairll> S;
long double dmin;

int cmp(pairll a, pairll b)
{
    if (a.second<b.second)
        return 1;
    if (a.second>b.second)
        return 0;
    return a.first<b.first;
}

long double distanta(pairll a, pairll b)
{
    return sqrtl((long double)((a.first-b.first)*(a.first-b.first)+(a.second-b.second)*(a.second-b.second)));
}

int main()
{
    fi>>N;
    for (int i=1;i<=N;i++)
        fi>>P[i].second>>P[i].first;
    sort(P+1,P+N+1,cmp);

    lef=1;
    S.insert(P[1]);
    dmin=(long double)1e10;
    for (int i=2;i<=N;i++)
    {

        while (lef<i && P[i].second-P[lef].second>dmin)
        {
            S.erase(P[lef]);
            lef++;
        }

        set <pairll> :: iterator it;
        it=S.lower_bound({(long long)(P[i].first-dmin),(long long)(P[i].second-dmin)});
        int nr;
        nr=1;
        while (it!=S.end() && nr<=5)
        {
            dmin=min(dmin,distanta(P[i],*it));
            it++;
            nr++;
        }
        S.insert(P[i]);
    }
    fo<<setprecision(7)<<fixed<<dmin;
    fi.close();
    fo.close();
    return 0;
}