import sys

def cal(S,F):
	
	if S < 0 or S > 456:
		print("S is not filled with the condition")
		sys.exit()

	elif F < 1 or F > 123:
		print("F is not filled with the condition")	
		sys.exit()

	else:
		return S / F + 1
data = input()
S = int(data.split(' ')[0])
F = int(data.split(' ')[1])

print(int(cal(S,F)))