aoc

commit bdcdf6f58271008c590ac9157e73c901280d092a
parent 3e40017c5e856fbbc33bbdd53a9a8e1d2b02abd8
Author: Sebastiano Tronto <sebastiano@tronto.net>
Date:   Mon,  1 Dec 2025 06:54:43 +0100

Day 1 I am stupid and I don't know why

Diffstat:
M
2025/01/a.py
 | 
8
+++++++-
A
2025/01/b.py
 | 
19
+++++++++++++++++++

2 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/2025/01/a.py b/2025/01/a.py
@@ -1,6 +1,12 @@
 import fileinput
 
+p = 50
+c = 0
 with fileinput.input() as lines:
 	for line in lines:
-		...
+		s = 1 if line[0] == "R" else -1
+		p = (p + s * int(line[1:])) % 100
+		if p == 0:
+			c += 1
 
+print(c)
diff --git a/2025/01/b.py b/2025/01/b.py
@@ -0,0 +1,19 @@
+import fileinput
+
+p = 50
+c = 0
+with fileinput.input() as lines:
+	for line in lines:
+		oldp = p
+		s = 1 if line[0] == "R" else -1
+		p += s * int(line[1:])
+		if p >= 100:
+			d = p // 100
+			c += d
+			p -= d * 100
+		elif p <= 0:
+			d = -p // 100 + 1
+			c += d if oldp != 0 else d-1
+			p = (p + d * 100) % 100
+
+print(c)