verbose = True

safe = 0
unsafe = 0
with open("input", "r") as fp:
	while line := fp.readline():
		nums = list(map(int, line.split(" ")))
		increasing = (nums[1] - nums[0]) > 0
		for i in range(1, len(nums)):
			diff = nums[i] - nums[i - 1]
			if abs(diff) > 3 or abs(diff) == 0 or increasing != (diff > 0):
				unsafe += 1
				if verbose:
					print(f"unsafe: {line}", end="")
				break
		else:
			safe += 1
			if verbose:
				print(f"  safe: {line}", end="")

print(f"Found {safe} safe and {unsafe} unsafe reports.")