#include <algorithm>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
using namespace std;
const int maxn = 200010;
int n, d[maxn], lc[maxn], rc[maxn];
double ans = 2e18;

struct node {
  double x, y;
} s[maxn];

double L[maxn], R[maxn], D[maxn], U[maxn];

double dist(int a, int b) {
  return (s[a].x - s[b].x) * (s[a].x - s[b].x) +
         (s[a].y - s[b].y) * (s[a].y - s[b].y);
}

bool cmp1(node a, node b) { return a.x < b.x; }

bool cmp2(node a, node b) { return a.y < b.y; }

void maintain(int x) {
  L[x] = R[x] = s[x].x;
  D[x] = U[x] = s[x].y;
  if (lc[x])
    L[x] = min(L[x], L[lc[x]]), R[x] = max(R[x], R[lc[x]]),
    D[x] = min(D[x], D[lc[x]]), U[x] = max(U[x], U[lc[x]]);
  if (rc[x])
    L[x] = min(L[x], L[rc[x]]), R[x] = max(R[x], R[rc[x]]),
    D[x] = min(D[x], D[rc[x]]), U[x] = max(U[x], U[rc[x]]);
}

int build(int l, int r) {
  if (l >= r) return 0;
  int mid = (l + r) >> 1;
  double avx = 0, avy = 0, vax = 0, vay = 0;  // average variance
  for (int i = l; i <= r; i++) avx += s[i].x, avy += s[i].y;
  avx /= (double)(r - l + 1);
  avy /= (double)(r - l + 1);
  for (int i = l; i <= r; i++)
    vax += (s[i].x - avx) * (s[i].x - avx),
        vay += (s[i].y - avy) * (s[i].y - avy);
  if (vax >= vay)
    d[mid] = 1, nth_element(s + l, s + mid, s + r + 1, cmp1);
  else
    d[mid] = 2, nth_element(s + l, s + mid, s + r + 1, cmp2);
  lc[mid] = build(l, mid - 1), rc[mid] = build(mid + 1, r);
  maintain(mid);
  return mid;
}

double f(int a, int b) {
  double ret = 0;
  if (L[b] > s[a].x) ret += (L[b] - s[a].x) * (L[b] - s[a].x);
  if (R[b] < s[a].x) ret += (s[a].x - R[b]) * (s[a].x - R[b]);
  if (D[b] > s[a].y) ret += (D[b] - s[a].y) * (D[b] - s[a].y);
  if (U[b] < s[a].y) ret += (s[a].y - U[b]) * (s[a].y - U[b]);
  return ret;
}

void query(int l, int r, int x) {
  if (l > r) return;
  int mid = (l + r) >> 1;
  if (mid != x) ans = min(ans, dist(x, mid));
  if (l == r) return;
  double distl = f(x, lc[mid]), distr = f(x, rc[mid]);
  if (distl < ans && distr < ans) {
    if (distl < distr) {
      query(l, mid - 1, x);
      if (distr < ans) query(mid + 1, r, x);
    } else {
      query(mid + 1, r, x);
      if (distl < ans) query(l, mid - 1, x);
    }
  } else {
    if (distl < ans) query(l, mid - 1, x);
    if (distr < ans) query(mid + 1, r, x);
  }
}

int main() {
  scanf("%d", &n);
  for (int i = 1; i <= n; i++) scanf("%lf%lf", &s[i].x, &s[i].y);
  build(1, n);
  for (int i = 1; i <= n; i++) query(1, n, i);
  printf("%.4lf\n", sqrt(ans));
  return 0;
}