「✨」 feat(day3/4): forgot to push yesterday, yayy

2025/04/part1.py

@@ -0,0 +1,42 @@
+import os
+
+if (os.path.isfile("./input")):
+    input = open("./input", "r").read()
+else:
+    input = "..@@.@@@@.\n@@@.@.@.@@\n@@@@@.@.@@\n@.@@@@..@.\n@@.@@@@.@@\n.@@@@@@@.@\n.@.@.@.@@@\n@.@@@.@@@@\n.@@@@@@@@.\n@.@.@@@.@."
+
+map = input.split('\n')
+if (map[-1] == ""):
+    map.pop()
+
+for i in range(len(map)):
+    map[i] = "." + map[i] + "."
+
+map.append("." * len(map[0]))
+map.insert(0, "." * len(map[0]))
+
+r = 0
+for y in range(len(map)):
+    for x in range(len(map[y])):
+        if map[y][x] == "@":
+            c = 0
+            if (map[y+1][x+1] == "@"):
+                c += 1
+            if (map[y+1][x] == "@"):
+                c += 1
+            if (map[y+1][x-1] == "@"):
+                c += 1
+            if (map[y][x+1] == "@"):
+                c += 1
+            if (map[y][x-1] == "@"):
+                c += 1
+            if (map[y-1][x+1] == "@"):
+                c += 1
+            if (map[y-1][x] == "@"):
+                c += 1
+            if (map[y-1][x-1] == "@"):
+                c += 1
+            if (c < 4):
+                r += 1
+
+print(r)

2025/04/part2.py

@@ -0,0 +1,48 @@
+import os
+
+if (os.path.isfile("./input")):
+    input = open("./input", "r").read()
+else:
+    input = "..@@.@@@@.\n@@@.@.@.@@\n@@@@@.@.@@\n@.@@@@..@.\n@@.@@@@.@@\n.@@@@@@@.@\n.@.@.@.@@@\n@.@@@.@@@@\n.@@@@@@@@.\n@.@.@@@.@."
+
+map = input.split('\n')
+if (map[-1] == ""):
+    map.pop()
+
+for i in range(len(map)):
+    map[i] = list("." + map[i] + ".")
+
+map.append(list("." * len(map[0])))
+map.insert(0, list("." * len(map[0])))
+
+r = 0
+lastr = -1
+while (r != lastr):
+    lastr = r;
+    nmap = map;
+    for y in range(len(map)):
+        for x in range(len(map[y])):
+            if map[y][x] == "@":
+                c = 0
+                if (map[y+1][x+1] == "@"):
+                    c += 1
+                if (map[y+1][x] == "@"):
+                    c += 1
+                if (map[y+1][x-1] == "@"):
+                    c += 1
+                if (map[y][x+1] == "@"):
+                    c += 1
+                if (map[y][x-1] == "@"):
+                    c += 1
+                if (map[y-1][x+1] == "@"):
+                    c += 1
+                if (map[y-1][x] == "@"):
+                    c += 1
+                if (map[y-1][x-1] == "@"):
+                    c += 1
+                if (c < 4):
+                    r += 1
+                    nmap[y][x] = "."
+    map = nmap;
+
+print(r)