import java.util.Scanner;

public class Main {


	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int socket = 1;
		int tap = 0;

		// 入力を受け取る
		int capacity = scan.nextInt();
		int border = scan.nextInt();

		while(socket < border) {
			tap++;
			socket += capacity - 1;
		}

		System.out.println(tap);
	}
}

/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