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| #include <bits/stdc++.h>
#define Orz ios::sync_with_stdio(0),cin.tie(0)
#define rep(i,a,b) for(int i=a;i<=b;i++)
#define pii pair<int,int>
#define pdd pair<double,double>
#define int long long
#define ll long long
#define ld long double
#define N 50005
#define all(x) x.begin(),x.end()
#define INF 5e18
#define eps 1e-9
#define x first
#define y second
using namespace std;
int n;
pii p[N];
ld dis(pii a, pii b){
ld x = a.x-b.x, y = a.y-b.y;
return sqrt(x*x + y*y);
}
signed main(){
Orz;
cout<<fixed<<setprecision(6);
while(cin>>n){
rep(i,0,n-1)cin>>p[i].x>>p[i].y;
sort(p,p+n);
ld d = INF;
rep(i,0,n-1){
rep(j,i+1,n-1){
if(p[j].x > p[i].x + d)break;
d = min(d, dis(p[i],p[j]));
}
}
cout<<d<<endl;
}
}
|