Problem:
Score : 200 points

Problem Statement

Takahashi's house has only one socket.

Takahashi wants to extend it with some number of power strips, each with A sockets, into B or more empty sockets.

One power strip with A sockets can extend one empty socket into A empty sockets.

Find the minimum number of power strips required.

Constraints

All values in input are integers.

2 \leq A \leq 20

1 \leq B \leq 20

Input

Input is given from Standard Input in the following format:

A B

Output

Print the minimum number of power strips required.

Sample Input 1

4 10

Sample Output 1

3

3 power strips, each with 4 sockets, extend the socket into 10 empty sockets.

Sample Input 2

8 9

Sample Output 2

2

2 power strips, each with 8 sockets, extend the socket into 15 empty sockets.

Sample Input 3

8 8

Sample Output 3

1

Solution in C# (Mono 4.6.2.0) (judge verdict: Wrong Answer)

using System;
using System.Linq;

class Program
{
  public static void Main(String[] args)
  {
    string input = Console.ReadLine();
    int socket = int.Parse(input.Split(' ')[0]);
    int req = int.Parse(input.Split(' ')[1]);
    
    int val = 0;
    int counter = 0;
    
    while(val <= req)
    {  counter++; 
      val = socket * counter;
         
    }
    
    Console.WriteLine(counter);
    //Console.ReadLine();
    
  }
}