import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt() - 1;
		int B = sc.nextInt() - 1;
		if (B == 1) {
			System.out.println(0);
			System.exit(0);
		}
		if ((B % A) != 0) {
			System.out.println(B / A + 1);
		} else {
			System.out.println(B / A);
		}
	}
}

/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