import java.util.*;

public class Main {
  public static void main(String[] args) {
	  Scanner sc = new Scanner(System.in);
	  int A = Integer.parseInt(sc.next());
	  int B = Integer.parseInt(sc.next());
	  
	  if(B == 1) {
		  System.out.println(0);
	  }
	  else {
		  int count = 1;
		  int temp = A;
		  while(temp < B) {
			  temp += A - 1;
			  count++;
		  }
		  System.out.println(count);
	  }
	  sc.close();
	  
  }
}

/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