Solve task #1.

01/input01.txt

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+L68
+L30
+R48
+L5
+R60
+L55
+L1
+L99
+R14
+L82

01/solve.py

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+#!/usr/bin/env python3
+
+import sys
+
+position = 50
+code = 0
+
+for line in sys.stdin:
+    line = line.strip()
+    if line.startswith('L'):
+        position -= int(line[1:])
+    elif line.startswith('R'):
+        position += int(line[1:])
+    else:
+        raise Exception('weird line')
+
+    position %= 100
+
+    if not position:
+        code += 1
+
+print(code)