Advent of Code 2025 let's go!

andreis · andreis · commit 3381f5c1bf90 · 2025-12-02T00:11:53.000Z
diff --git a/.gitignore b/.gitignore
@@ -635,3 +635,6 @@ $RECYCLE.BIN/
 # End of https://www.toptal.com/developers/gitignore/api/linux,macos,windows,visualstudiocode,intellij,vim,emacs,node,python,go,java
 *.input
 .vscode
+
+# Mister Advent of Code hates for his input files to be made public
+*.txt
diff --git a/2025/01.py b/2025/01.py
@@ -0,0 +1,15 @@
+with open("01.txt") as f:
+  answer1 = answer2 = 0
+  cur = 50
+  for line in f.readlines():
+    sign = -1 if line.startswith("L") else 1
+    dist = int(line[1:])
+    n_turns = dist // 100
+    dist = dist % 100
+    prev = cur
+    cur += sign * dist
+    answer2 += n_turns + (int(cur < 1 or cur > 99) if prev != 0 else 0)
+    cur = (cur + 100) % 100
+    if cur == 0:
+      answer1 += 1
+print(answer1, answer2)
