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

public class Main
{
	public static void main(String args[])throws IOException
	{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		
		String []s = br.readLine().split(" ");
		
		int A = Integer.parseInt(s[0]);
		int B = Integer.parseInt(s[1]);

		int c=1,d=B-A;
		
		while(d>0)
		{
			d-=(A-1);
			++c;
		}
		
		if(B==1)
			c = 0;
			
		System.out.println(c);

	}
}
/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