day12/input

@@ -1,41 +0,0 @@
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day12/sample

@@ -1,5 +0,0 @@
-Sabqponm
-abcryxxl
-accszExk
-acctuvwj
-abdefghi

day12/sol.py

@@ -1,54 +0,0 @@
-import heapq
-import string
-
-elevation = {c:i for i, c in enumerate(string.ascii_lowercase)}
-elevation['E'] = elevation['z']
-elevation['S'] = elevation['a']
-
-data = open("input").read().splitlines(False)
-#print(*data, sep="\n")
-
-extra = []
-for y, row in enumerate(data):
-    for x, c in enumerate(row):
-        if c == 'S':
-            start = (x,y)
-        elif c == 'E':
-            goal = (x,y)
-        elif c == 'a':
-            # for part 2
-            extra.append((x,y))
-
-def get(x, y):
-    return elevation[data[y][x]]
-
-def solve(part):
-    q = [(0, start)]
-
-    if part == 2:
-        q.extend((0,p) for p in extra)
-
-    done = {}
-    while q:
-        cost, (x,y) = heapq.heappop(q)
-        if (x,y) in done:
-            continue
-        #print(x,y,cost)
-        if (x,y) == goal:
-            print('found', cost)
-            break
-        here = get(x,y)
-        done[(x,y)] = cost
-
-        def push(x,y):
-            if 0 <= y < len(data):
-                if 0 <= x < len(data[y]):
-                    if get(x,y) <= here+1 and (x,y) not in done:
-                        heapq.heappush(q, (cost+1, (x,y)))
-        push(x-1, y)
-        push(x+1,y)
-        push(x, y-1)
-        push(x, y+1)
-
-solve(1)
-solve(2)