import java.util.*;
public class Main{
	public static void main(String[] args){
	 Scanner sc = new Scanner(System.in);
	 int a = sc.nextInt();
	 int b = sc.nextInt();
	 int n = 1;
      int i ;
	 for(i = 0;n<b;i++){
	 	n+=a-1;
	 }
	 System.out.println(i);
    }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz