tijie

#include<bits/stdc++.h>
using namespace std;
long long g[1345678],n;
void jjb(int a,int b){
if(a >= b) return;
int mid = a+b >> 1;
cout << "[";
for(int i = a;i<=b;i++){
cout<<g[i]<<" ";
if(i == mid) cout<<"],[";
}
cout<<"]\n";
jjb(a,mid);

jjb(mid+1,b);

}
int main(){
cin >> n;
for(int i = 1;i<=n;i++){
cin >> g[i];
}
jjb(1,n);

return 0;

}