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authorPrefetch2022-12-31 22:21:39 +0100
committerPrefetch2022-12-31 22:21:39 +0100
commit68615a9ad2c942254135cffb00cf25a84a3b1356 (patch)
tree1ed3131f673207b2ef0bdaee3ee98bb68d6640ca /14/main.py
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+#!/usr/bin/python
+
+
+
+class Reindeer:
+ pass
+
+
+
+def parse_input(lines):
+ result = []
+ for line in lines:
+ words = line.split()
+
+ r = Reindeer()
+ r.name = words[0]
+ r.dist = 0
+ r.score = 0
+ r.state = "moving"
+ r.speed = int(words[ 3])
+ r.tmove = int(words[ 6])
+ r.trest = int(words[13])
+ r.timer = 0
+
+ result.append(r)
+
+ return result
+
+
+
+def solve_partn(partn, lines, tmax):
+ contestants = parse_input(lines)
+
+ for t in range(tmax):
+ for r in contestants:
+ if r.state == "moving":
+ r.dist += r.speed
+ r.timer += 1
+ if r.timer >= r.tmove:
+ r.state = "resting"
+ r.timer = 0
+ else: # r.state == "resting"
+ r.timer += 1
+ if r.timer >= r.trest:
+ r.state = "moving"
+ r.timer = 0
+
+ # Award 1 point to leader (and to others in case of a tie)
+ # Only for part 2, but doesn't hurt part 1, so not disabled.
+ leader = max(contestants, key = lambda r: r.dist)
+ for r in contestants:
+ if r.dist == leader.dist:
+ r.score += 1
+
+ if partn == 1:
+ winner = max(contestants, key = lambda r: r.dist)
+ return winner.dist
+ else: # partn == 2
+ winner = max(contestants, key = lambda r: r.score)
+ return winner.score
+
+
+
+def main():
+ # Read reindeer stats from input text file
+ with open("input.txt", "r") as f:
+ lines = f.read().splitlines()
+
+ print("Part 1 solution:", solve_partn(1, lines, 2503)) # 2640 for me
+ print("Part 2 solution:", solve_partn(2, lines, 2503)) # 1102 for me
+
+
+
+if __name__ == "__main__":
+ main()