import java.util.*;
import java.io.*;

public class Main{

	
	public static void main(String[] args){
	
		int A,B;

		//////入力/////////
		Scanner stdIn = new Scanner(System.in);
		A = stdIn.nextInt();
		B = stdIn.nextInt();
		
		int ans = 1;
		int C = A;
		while(C < B){
			C += (A - 1);
			ans++;
		};
		if(B == 1){
			ans = 0;
		}		
		
		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