#include <iostream>
using namespace std;
int main(){
int n;
cin >> n;
int sp=0;
int sp1=2*n-2;
for(int i=0;i<n;i++){
for(int j=0;j<n-i;j++){
cout << "*";
}
for(int j=0;j<=sp;j++){
cout << " ";
}
for(int j=0;j<n-i;j++){
cout << "*";
}
cout << endl;
sp+=2;
}
for(int i=0;i<n;i++){
for(int j=0;j<=i;j++){
cout << "*";
}
for(int j=0;j<=sp1;j++){
cout << " ";
}
for(int j=0;j<=i;j++){
cout << "*";
}
cout << endl;
sp1-=2;
}
}
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