Main.java

import java.io.*;
import java.util.*;

public class Main {

 public static void main(String[] args) {
 Scanner sc = new Scanner(System.in);
 int n = sc.nextInt();
 int k = 0;
 for (int i = 0; i < n; i++) {
 for (int j = 0; j < n; j++) {
 if ((j == 0 && (i % 2) == 1) || (j == n && (i % 2) == 0)) {
 System.out.print("S ");
 } else {
 System.out.print(" ");
 }
 }
 System.out.println();
 }
 }
}