include<cstdio>

using namespace std;
int main() {
int n;
scanf("%d",&n);
for(int i=1; i<=n/2+1; i++) {
for(int j=1; j<=i-1; j++)
printf(" ");
printf("x");
for(int j=n-i-i; j>=1; j=j-1)
printf(" ");
if(i!=n/2+1)
printf("x");
printf("\n");
}
for(int i=n/2; i>=1; i--) {
for(int j=1; j<=i-1; j++)
printf(" ");
printf("x");
for(int j=n-i-i; j>=1; j=j-1)
printf(" ");

        printf("x");
    printf("\n");
}
return 0;

}