import java.util.*;

public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a,b,sum,count;

    a = sc.nextInt();
    b = sc.nextInt();
    if(b == 1){
      System.out.println(0);
    }else{
      sum = a;
      count = 1;
      while(sum < b){
        sum += (a - 1);
        count++;
      }

      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