#include <bits/stdc++.h>
using namespace std;
#define LMAX 100005
pair<long long,long long> p[LMAX];
int main(){
    freopen("cmap.in","r",stdin);
    freopen("cmap.out","w",stdout);
    int n;
    scanf("%d",&n);
    for(int i=1;i<=n;++i)
        scanf("%lld %lld",&p[i].first,&p[i].second);
    sort(p+1,p+n+1);
    long long dist_sqr=LLONG_MAX;
    for(int i=1;i<=n;++i)
        for(int j=i+1;j<=n;++j){
            long long dx=p[j].first-p[i].first;
            if(dx*dx>=dist_sqr)
                break;
            long long dy=p[j].second-p[i].second;
            long long dist=dx*dx+dy*dy;
            if(dist<dist_sqr)
                dist_sqr=dist;
        }
    printf("%.6f",sqrt(dist_sqr));
    return 0;
}