#include<bits/stdc++.h> using namespace std; char c[80]; int main() {int n,h,H,a,e,E; cin>>n; for(int h=1,H=n;;h++,H--) {c[h]='x'; c[H]='x'; for(int k=1;k<=n;k++) {cout<<c[k]; } cout<<endl; c[h]=' '; c[H]=' '; if(hH) {e=h;E=h;a=1;break;} } for(;;e--,E++) {if(a!=1) { c[e]='x'; c[E]='x'; for(int k=1;k<=n;k++) {cout<<c[k]; } cout<<endl; c[e]=' '; c[E]=' '; if(e0) {break;} } else a++; } return 0; }

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n,i,j;
    cin>>n;
    if(n>=3&&n<=79&&n%2==1)
    {
	for(i=1;i<=n/2;i++)
    {
    	for(j=1;j<=i-1;j++)
    	{
    		cout<<" ";
		}
    	cout<<"X";
    	for(j=1;j<=n-i*2;j++)
    	{
    		cout<<" ";
		}
		cout<<"X"<<endl;
	}
	for(i=1;i<=n/2;i++)
	{
		cout<<" ";
	}
	cout<<"X"<<endl;
	for(i=n/2;i>=1;i--)
    {
    	for(j=1;j<=i-1;j++)
    	{
    		cout<<" ";
		}
    	cout<<"X";
    	for(j=1;j<=n-i*2;j++)
    	{
    		cout<<" ";
		}
		cout<<"X"<<endl;
	}
	}
	return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n;
	cin>>n;
	for(int i=1;i<=n/2;i++){
		for(int j=0;j<i-1;j++){
			cout<<" ";
		}
		cout<<"X";
		for(int j=1;j<=n-2*i;j++){
			cout<<" ";
		}
		cout<<"X"<<endl;
	}
	for(int i=1;i<=n/2;i++){
		cout<<" ";
	}
	cout<<"X"<<endl;
	for(int i=1;i<=n/2;i++){
		for(int j=n/2-i;j>=1;j--){
			cout<<" ";
		}
		cout<<"X";
		for(int j=1;j<=i*2-1;j++){
			cout<<" ";
		}
		cout<<"X"<<endl;
	}
} 

#include<bits/stdc++.h>

using namespace std;

int main()

{

int n,o;

cin>>n;

o=n/2+1;

for(int i=1;i<=o;i++)

{

for(int h=1;h<=i-1;h++)

cout<<" ";

if(i==o)

{

cout<<"X";

}

else

{

cout<<"X";

for(int h=1;h<=(o-i)*2-1;h++)

cout<<" ";

cout<<"X";

}

cout<<endl;

}

for(int i=1;i<=n-o;i++)

{

for(int h=1;h<=n-o-i;h++)

cout<<" ";

cout<<"X";

for(int h=1;h<=(n-o+i-n/2)*2-1;h++)

cout<<" ";

cout<<"X";

cout<<endl;

}

return 0;

}