20220105

# while 1: # n, a, b = map(int, input().split()) # if n == a == b == 0: break # arr = sorted([[*map(int, input().split())]for _ in range(n)], key=lambda x: -abs(x[1]-x[2])) # ans = 0 # for k, x, y in arr: # if x <= y: val = min(k, a) # else: val = k - min(k, b) # ans += val * x + (k - val) * y # a -= val # b -= k - val # print(ans) # max = -1 # sum = 0 # # for i in range(10): # x, y = input().split() # x = int(x) # y = int(y) # # sum = sum - x # sum = sum + y # # if sum > max: # max = sum # # print(max) # def rec(data): # for i in range(10): # # return(data) # sum = sum - x # sum = sum + y # # if sum > max: # max = sum # # print(max) # def func(sum, x, y): # x = int(x) # y = int(y) # # sum -= x # sum += y # return sum # # max = -1 # sum = 0 # # for i in range(10): # x, y = input().split() # # sum = func(sum, x, y) # if max < sum: # max = sum # # print(max) # class patrick: # # initialization # def __init__(self): # print('Class Initialization') # # def callBy(self): # print('Here is additional Function') # # x = patrick() # x.callBy() # class student: # def __init__(self, name, age): # self.name = name # self.age = age # # def talk(self): # print('My Name is ', self.name, 'My Age is ', self.age) # # data = [] # # x = student('윤도윤도 잘생김', 13) # x.talk() # # data.append(x) # a=0 # t=0 # # n=int(input()) # for i in range(n): # b,c=input().split() # b=int(b) # c=int(c) # d=c%b # t=t+d # print(t) # class patrick: # # initialization # def __init__(self): # print('Class Initialization') # # def callBy(self): # print('Here is additional Function') # # x = patrick() # x.callBy() # class train: # def __init__(self): # # Sample Source # def sum(a, b): # return a+b # # print(sum(10, 20)) # class calculator: # def sum(self, a, b): # return a+b # # x = calculator() # print(x.sum(10, 20)) # class calculator: # def __init__(self, a, b): # initialize # self.a = a # self.b = b # # def sum(self): # return self.a + self.b # # # x = calculator(10, 20) # print(x.sum()) # class train: # def __init__(self): # self.total = 0 # self.max = -1 # # # def sum(self, a, b): # self.total = self.total - a + b # self.max_() # def max_(self): # if self.total > self.max: # self.max = self.total # # p = train() # for i in range(10): # x,y = input().split() # x = int(x) # y = int(y) # p.sum(x, y) # p.max_() # print(p.max) # a = int(input()) # b = int(input()) # c = int(input()) # # a_1 = int(input()) # b_1 = int(input()) # # cp = min(a,b,c) # cj = min(a_1,b_1) # # rs = (cp+cj) * 1.1 # print("%.1f" % rs) # class money: # def p(self,a,b,c): # cp = min(a,b,c) # return cp # # def j(self,a_1,b_1): # cj = min(a_1,b_1) # return cj # # a = int(input()) # b = int(input()) # c = int(input()) # a_1 = int(input()) # b_1 = int(input()) # # z = money() # rs = (z.p(a, b, c) +z.j(a_1,b_1)) * 1.1 # print("%.1f" % rs) # def funck(a,b): # cnt = 0 # yong = a # if a == b: # cnt = 1 # else: # for i in range(1,a): # if yong>=b: # cnt=cnt+1 # yong=a-b+1 # a=yong # else: # break # print(cnt) # a,b = input().split() # funck(int(a),int(b)) class cafe: def __init__(self, a, b): self.a = a self.b = b self.sum = 0 def eat(self): while True: if self.a < self.b: break else : self.a -= self.b self.a += 1 self.sum += 1 x, y = input().split() p = cafe(int(x), int(y)) p.eat() print(p.sum) # def funck(a,b): # cnt = 0 # yong = a # if a == b: # cnt = 1 # else: # for i in range(1,a): # if yong>=b: # cnt=cnt+1 # yong=a-b+1 # a=yong # else: # break # print(cnt) # a,b = input().split() # funck(int(a),int(b))