#include <bits/stdc++.h>

#define MAX_N 100000

using namespace std;

typedef long long lint;

const lint sqrInf = 1LL * 4000000000000000000LL;

int n;

struct coord
{
    int x, y;
};

coord v[MAX_N + 1];
coord Y[MAX_N + 1];
coord x[MAX_N + 1];

void readFile()
{
    ifstream f("cmap.in");

    f >> n;

    for(int i = 1; i <= n; i ++)
        f >> v[i].x >> v[i].y;

    f.close();
}

struct cmpY
{
    bool operator() (coord a, coord b)
    {
        if(a.y != b.y)
            return a.y < b.y;

        return a.x < b.x;
    }
};

lint dist(coord a, coord b)
{
    lint dx = a.x - b.x;
    lint dy = a.y - b.y;

    return dx * dx + dy * dy;
}

bool cmp2(coord a, coord b)
{
    if(a.y != b.y)
        return a.y < b.y;

    return a.x < b.x;
}

void mergeSort(int st1, int dr1, int st2, int dr2)
{
    int cr = 0;
    int i = st1;
    int j = st2;
    while(i <= dr1 && j <= dr2)
    {
        int val = cmp2(Y[i], Y[j]);
        if(val == 0)
            x[++ cr] = Y[i ++];

        else
            x[++ cr] = Y[j ++];
    }

    while(i <= dr1)
        x[++ cr] = Y[i ++];

    while(j <= dr2)
        x[++ cr] = Y[j ++];

    for(i = st1; i <= dr2; i ++)
        Y[i] = x[i - st1 + 1];
}

lint dmin(int st, int dr)
{
    //printf("SUNTEM %d %d\n", st, dr);

    if(st == dr)
        return sqrInf;

    if(dr - st + 1 <= 3)
    {
        sort(Y + st, Y + dr + 1, cmpY());

        lint rez = sqrInf;
        int i, j;
        for(i = st; i <= dr; i ++)
        {
            for(j = i + 1; j <= dr; j ++)
                rez = min(rez, dist(Y[i], Y[j]));
        }

   // printf("DIN %d %d\n", st, dr);
   //     printf("RETURN %lld\n", rez);

        return rez;
    }

    int mid = ((st + dr) >> 1);
    lint d = min(dmin(st, mid), dmin(mid + 1, dr));

    mergeSort(st, mid, mid + 1, dr);///y
    int i;
    int k = 0;
    for(i = st; i <= dr; i ++)
    {
        if(dist(Y[i], v[mid]) <= d)
            x[++ k] = Y[i];
    }

    int j;
    for(i = 1; i <= k; i ++)
    {
        for(j = i + 1; j <= i + 5 && j <= k; j ++)
            d = min(d, dist(x[i], x[j]));
    }

   // printf("DIN %d %d\n", st, dr);
  //  printf("rETURN %lld\n", d);

    return d;
}

struct cmp
{
    bool operator() (coord a, coord b)
    {
        if(a.x != b.x)
            return a.x < b.x;

        return a.y < b.y;
    }
};

lint rez;

void solve()
{
    sort(v + 1, v + n + 1, cmp());

    int i;
    for(i = 1; i <= n; i ++)
        Y[i] = v[i];

    rez = dmin(1, n);
}

void printFile()
{
    ofstream g("cmap.out");

    g << fixed << setprecision(6) << sqrt(rez) << "\n";

    g.close();
}

int main()
{
    readFile();

    solve();

    printFile();

    return 0;
}