101391: [AtCoder]ABC139 B - Power Socket
Memory Limit:256 MB
Time Limit:2 S
Judge Style:Text Compare
Creator:
Submit:0
Solved:0
Description
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