aoc

Advent of Code Solutions
git clone git://git.alexkarle.com.com/aoc
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1.py (532B) [raw]

      1 import sys
      2 
      3 total = 0
      4 for l in sys.stdin:
      5     report = [int(x) for x in l.split()]
      6 
      7     delta = None
      8     prev = None
      9     safe = True
     10     for n in report:
     11         if prev:
     12             d2 = n - prev
     13             if not delta:
     14                 delta = d2
     15             if abs(d2) > 3 or d2 == 0:
     16                 safe = False
     17                 break
     18             # check for same signage
     19             if delta and delta * d2 < 0:
     20                 safe = False
     21                 break
     22         prev = n
     23     if safe:
     24         total += 1
     25 
     26 print(total)