import java.util.*;
 
public class Main {
	public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int d = 1;

        if (b==1) {
            System.out.println(0);
        } else {

        int cnt = 0;
        while (d < b) {
            d += a-1;
            cnt += 1;
        }
        System.out.println(cnt);
    }
}
}
/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