import java.util.Objects;
import java.util.Scanner;

public class Main {
    public static void main(final String[] args) {
        final int p = 2;
        switch (p) {
        case 1:
            P1.p1();
            break;
        case 2:
            P2.answer();
            break;
//        case 3:
//            P3.answer();
//            break;
        }
    }
}

//class P3 {
//    static void answer() {
//        final Scanner sc = new Scanner(System.in);
//        final int a = sc.nextInt();
//        final int b = sc.nextInt();
//        final int res = calc(a, b);
//        System.out.println(res);
//    }
//
//}

class P2 {
    static void answer() {
        final Scanner sc = new Scanner(System.in);
        final int a = sc.nextInt();
        final int b = sc.nextInt();
        final int res = calc(a, b);
        System.out.println(res);
    }

    static int calc(final int a, final int b) {
        final int per = a - 1;
        final int remain = b - 1;
        final int x = remain / per;
        if (remain - (per * x) > 0) {
            return x + 1;
        }
        return x;
    }
}

class P1 {

    static void p1() {
        final Scanner sc = new Scanner(System.in);
        final String yohou = sc.nextLine();
        final String jissai = sc.nextLine();

        final int res = calc(yohou, jissai);
        System.out.println(res);
    }

    static int calc(final String yohou, final String kekka) {
        int res = 0;
        for (int i = 0; i < 3; i++) {
            if (Objects.equals(yohou.charAt(i), kekka.charAt(i))) {
                res++;
            }
        }
        return res;
    }
}
/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