import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		double sockets = in.nextDouble();
		double total_req = in.nextDouble();	
		double mid = total_req-sockets;
		if(total_req == 1.0) {
			System.out.println(0);
			System.exit(0);
		}
		//System.out.println(mid);
		double total = Math.ceil(mid/(sockets-1));
		//System.out.println(total);
		if(sockets>=total_req) {
			System.out.println(1);
			System.exit(0);
		}
//		if(total < 1.0 && total != 0) {
//			total = 1.0;
//		}
		total++;
		System.out.println((int)(total));
		

	}

}

/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