```#include<stdio.h>
int main(){
    int n,i,j;
    while(scanf("%d",&n)!=EOF){
        for(i=0;i<n;i++){
            for(j=0;j<n;j++){
                if(j==i||j==n-i-1){
                    printf("*");
                }else{
                    printf(" ");
                }
            }
            printf("\n");
        }
    }
}