#include <iostream>
using namespace std;
int main() {
int n;
char a;
cin >> n >> a;
int m = n / 2;
if(n % 2 != 0) {
m++;
}
for(int i = 0; i < m; i++) {
if(i == 0 || i == m - 1) {
for(int j = 0; j < n; j++) {
cout << a;
}
} else {
for(int j = 0; j < n; j++) {
if(j == 0 || j == n - 1) {
cout << a;
} else {
cout << " ";
}
}
}
cout << endl;
}
return 0;
}
