import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] args) {
        int a,b,ans=0;
        FastIO fastIO = new FastIO();

        a=fastIO.readInt();
        b=fastIO.readInt();
        --b;
        while(b>0)
        {
            b-=a;
            b+=1;
            ++ans;
        }
        System.out.println(ans);
    }

    private static class FastIO
    {
        private StringTokenizer stringTokenizer;
        private BufferedReader bufferedReader;

        public FastIO()
        {
            bufferedReader = new BufferedReader(new InputStreamReader(System.in));
            stringTokenizer = null;
        }

        public String read()
        {
            if (stringTokenizer == null || !stringTokenizer.hasMoreTokens())
            {
                try
                {
                    stringTokenizer = new StringTokenizer(bufferedReader.readLine());
                }
                catch (IOException e)
                {
                    throw new RuntimeException(e);
                }
            }
            return stringTokenizer.nextToken();
        }

        public int readInt()
        {
            return Integer.parseInt(read());
        }

        public long readLong()
        {
            return Long.parseLong(read());
        }
    }
}
/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