题解

#include<iostream>
#include<cmath>
using namespace std;
int a[105];
void hua(int l,int r)
{
    if(l==r) return;
    int mid=(r+l)/2;
    cout<<"[";
    for(int i=l;i<=mid;i++)
    {
        cout<<a[i]<<" ";
    }
    cout<<"],[";
    for(int i=mid+1;i<=r;i++)
    {
        cout<<a[i]<<" ";
    }
    cout<<"]"<<endl;
    hua(l,mid);
    hua(mid+1,r);
}
int main()
{
    int n;
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i];
    }
    hua(1,n);
    return 0;
}