X 2
A 7
@

#include<iostream>
using namespace std;
int main()
{
    int n,l=1;
    char ch;
    while(1)
    {
        cin>>ch;
        if(ch==‘@‘)
        break;
        cin>>n;
        if(l!=1)
        cout<<endl;
        for(int i=0;i<n-1;i++)
        {
            for(int j=0;j<n-1-i;j++)
            cout<<‘ ‘;  cout<<ch;
            for(int j=0;j<2*i-1;j++)
            cout<<‘ ‘;  if(i!=0) cout<<ch;
            cout<<endl;
        }
        for(int k=2*n-1;k>0;k--)
        cout<<ch; cout<<endl; l++;
    }
    return 0;
}