#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<<" ";
                temp++;
            }
            cout<<"\n";
            temp++;
        }
        for(int i=1; i<=rows/2; i++)
        {
            for(int j=1;j<=rows/2+1-i;j++)
            {
                cout<<temp<<" ";
                temp--;
            }
            cout<<"\n";
            temp--;
        }
return 0;
}

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

NA==

4