#include<iostream>
using namespace std;

int main(){

    int n;
    cin>>n;

    int a[n];
    for(int i=0;i<n;i++){
        cin>>a[i];
    }
    cout<<"before reverse"<<endl;
    for(int i=0;i<n;i++){
        cout<<a[i]<<" ";
    }
    cout<<endl;

   int start = 0;
    int end = n-1;
    while(start <= end){
        swap(a[start], a[end]);

        start++;
        end--;
    }

    cout<<"After reverse"<<endl;
    for(int i=0;i<n;i++){
        cout<<a[i]<<" ";
    }
    cout<<endl;


   return 0;
}