import java.util.Scanner;

class Main
{
    public static void main(String[] args)
    {
      //入力
      Scanner sc = new Scanner(System.in);
      int a = sc.nextInt();
      int b = sc.nextInt();
      
      int count = 1;
      int min = 0;
      for (int i=1;i<20; i++) {
        if(count>=b) {
          break;
        }
        count += a-1;
        min ++;
      }
      
      System.out.println(min);
      
    }
      
}


/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