first attempt, answer too low

brechtje/1/1-1.py

@@ -0,0 +1,20 @@
+input = open("input.txt", "r").read().splitlines()
+
+pos = 50
+password = 0
+
+for line in input:
+    if line.startswith('L'):
+        pos -= int(line[1:])
+    elif line.startswith('R'):
+        pos += int(line[1:])
+
+    if pos < 0:
+        pos += 100
+    elif pos > 99:
+        pos -= 100
+
+    if pos == 0:
+        password += 1
+
+print(password)