import java.util.Scanner;
public class Main {

    public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
    	// 入力
    	int a = sc.nextInt();
    	int b = sc.nextInt();

      
      
    	int ans = 0;
    	int sum = 0;

    	for (int i = 0; true; i++){
          if (b==1) { break;
      }
    		ans++;
    		sum = sum + (a - 1);
    		if (b <= sum + 1){
    			break;
    		}
    	}

    	// 出力
    	System.out.println(ans);
    }
}
/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