import java.util.*;
class Main{
    public static void main(String[] Args){
        Scanner scan = new Scanner(System.in);
        int A =  Integer.parseInt(scan.next());
        int B =  Integer.parseInt(scan.next());
        scan.close();
        int number_power_strips = 0;
        int power_outlet = 1;
        while(power_outlet < B){
            number_power_strips++;
            power_outlet += A - 1;
        }
        System.out.println(number_power_strips);
    }
}
/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