include <bits/stdc++.h>

using namespace std;
int main()
{
int a,b,c,d,i,j;
while(~scanf("%d",&a))
{
b=a2+1;
for(i=0;i<b;i++)
{
for(j=0;j<=a;j++)
{
if(j<=a-i||j<=i-a)
printf(" ");
else printf(" ");
}
printf("\n");
}
}
}