blob: 3ec9967500f843155c91c86e9fd82674de19ce75 (
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safe = unsafe = 0
def is_safe(report: str) -> bool:
last_num = 0
increase = True
for ii, num in enumerate((int(elem) for elem in report.split())):
if ii != 0:
if ii == 1:
increase = num > last_num
if (num > last_num) != increase:
return False
diff = abs(num - last_num)
if diff < 1 or diff > 3:
return False
last_num = num
return True
with open("input") as f:
for report in f.readlines():
if is_safe(report):
safe += 1
else:
unsafe += 1
print(f"safe: {safe}\nunsafe: {unsafe}")
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