{"raw_statement":[{"iden":"problem statement","content":"Takahashi's house has only one socket.\nTakahashi wants to extend it with some number of power strips, each with $A$ sockets, into $B$ or more empty sockets.\nOne power strip with $A$ sockets can extend one empty socket into $A$ empty sockets.\nFind the minimum number of power strips required."},{"iden":"constraints","content":"*   All values in input are integers.\n*   $2 \\leq A \\leq 20$\n*   $1 \\leq B \\leq 20$"},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$A$ $B$"},{"iden":"sample input 1","content":"4 10"},{"iden":"sample output 1","content":"3\n\n$3$ power strips, each with $4$ sockets, extend the socket into $10$ empty sockets."},{"iden":"sample input 2","content":"8 9"},{"iden":"sample output 2","content":"2\n\n$2$ power strips, each with $8$ sockets, extend the socket into $15$ empty sockets."},{"iden":"sample input 3","content":"8 8"},{"iden":"sample output 3","content":"1"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}