import java.util.Scanner;

public class Main {

    void solve() {
        Scanner sc = new Scanner(System.in);
        int A = sc.nextInt(); // A個口のタップ
        int B = sc.nextInt(); // ゴール

        int sum = 1;   // 口数の合計
        int count = 0; // 電源タップの数
        while (sum < B) {
            sum += (A -1);
            count++;
        }

        System.out.print(count);
    }

    // Main
    public static void main(String[] args) {
        new Main().solve();
    }
}
/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