import java.util.Scanner;


// 139_b
public class Main {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        int a = scan.nextInt();
        int b = scan.nextInt();
        int count = 1;

        for (int i = 0; i < 100; i++) {

            if (a + (a - 1) * i >= b) {
                break;
            }
            count++;
        }

        if (b == 1) {
            count = 0;
        }

        System.out.println(count);

    }

}

/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