function Main(input) {
	var data = input.split(" ")
	var i = 0;
	while(1){
		if(data[1] <= data[0] * i - (i-1)) break;
		i++;
	}
	console.log(i)
}
 
// Don't edit this line!
Main(require("fs").readFileSync("/dev/stdin", "utf8"));