import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc=new Scanner(System.in); while(sc.hasNext()){ int n=sc.nextInt(); if(n==0) break; for (int i = 0; i <=n*2; i++) { if(i==n) { for (int j =0; j <=n; j++) System.out.print("*"); System.out.println("*"); } else{ System.out.print("*"); for (int j = 1; j <=n; j++) System.out.print(" "); System.out.println("*"); } } System.out.println(); } } }
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