1006

package com.company;

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
    // write your code here
        Scanner sc=new Scanner(System.in);
        int n=sc.nextInt();
        int bai=n/100;
        int shi=(n-bai*100)/10;
        int ge=n-bai*100-shi*10;
        for (int b=bai;b>0;b--){
            System.out.print("B");
        }
        for (int s=shi;s>0;s--){
            System.out.print("S");
        }
        for (int g=1;g<ge+1;g++){
            System.out.print(g);
        }
    }
}