#include <iostream>
using namespace std;
int main()
{
int rows, x, y;
int temp = 1;
cin>>rows;
for(int i=1; i<=rows/2+1; i++)
{
for(int j=1;j<=i;j++)
{
cout<<temp<<" ";
}
cout<<"\n";
temp++;
}
for(int i=1; i<=rows/2; i++)
{
for(int j=1;j<=rows/2+1-i;j++)
{
cout<<temp<<" ";
}
cout<<"\n";
temp++;
}
return 0;
}
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