c++

#include <iostream>

using namespace std;

int main(int argc, char** argv) {

    int a;
    cin>>a;

cout<<endl;    cout<<endl;

    for(int i=1; i<=a; i++)
        {for(int i=1; i<=a; i++)
            {cout<<"X";}
                cout<<endl;}

cout<<endl;    cout<<endl;

    for(int r=1; r<=a; r++)
        {for(int x=1; x<=r; x++)
            {cout<<"X";}
                cout<<endl;    }

cout<<endl;    cout<<endl;

    for(int r=1; r<=a; r++)
        {for(int x=1; x<=a-r; x++)
            cout<<" ";
                for(int k=1; k<=r; k++)
                    cout<<"X";
                    cout<<endl;}

cout<<endl;    cout<<endl;

    for(int k=1; k<=a; k++)
        cout<<"X";
        cout<<endl;
            for(int n=1;n<=a-2;n++){
                cout<<"X";
            for(int j=1;j<=a-2;j++)
                cout<<" ";
                cout<<"X"<<endl;}
            for(int l=1;l<=a;l++)
                cout<<"X";


    cout<<endl;    cout<<endl;


    for(int b=1;b<=a;b++)
    {for(int c=1;c<=a-b;c++)
            {cout<<" ";}
                for(int c=1;c<=b*2-1;c++)
                        {cout <<"X";}
                            cout<<endl;}

    for(int d=1;d<=2;d++)
        {for(int d=1;d<=a-1;d++)
            {cout <<" ";}
                cout<<"#"<<endl;}


    return 0;
}