样例输入1
2
样例输出1
*
#include <iostream>
using namespace std;
int main()
{
int n;
cin>>n;
int t=2*n-1;
for(int i=1;i<n;i++){
for(int j=1;j<=i-1;j++) cout<<" ";
for(int j=1;j<=t;j++){
if(j==1||j==t) cout<<"*";
else cout<<" ";
}
t-=2;
cout<<endl;
}
for(int i=1;i<=n;i++){
for(int j=1;j<=n;j++)
if(j==n)cout<<"*";
else cout<<" ";
cout<<endl;
}
return 0;
}