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#include <bits/stdc++.h>
using namespace std;
ifstream f("cmap.in");
ofstream g("cmap.out");
int n;
pair < long long , long long > v[100005];
long long dmin=LLONG_MAX;
int main()
{
f >> n;
for (int i=1;i<=n;i++) {
f >> v[i].first >> v[i].second;
}
for (int i=1;i<n;i++) {
for (int j=i+1;j<=n;j++) {
dmin = min(dmin,(v[j].first-v[i].first)*(v[j].first-v[i].first)+(v[j].second-v[i].second)*(v[j].second-v[i].second));
}
}
g << fixed << setprecision(6) << sqrt(dmin);
return 0;
}