Solve a couple of 2017 problems.

2017/d9.py

@@ -0,0 +1,33 @@
+def part_1(data):
+    i = 0
+    group_score, garbage_score = 0, 0
+    in_garbage = False
+    group_level = 0
+    while i < len(data):
+        match data[i]:
+            case "{" if not in_garbage:
+                group_level += 1
+            case "}" if not in_garbage:
+                assert group_level > 0
+                group_score += group_level
+                group_level -= 1
+            case "<" if not in_garbage:
+                in_garbage = True
+            case ">" if in_garbage:
+                in_garbage = False
+            case "!" if in_garbage:
+                i += 1
+            case _ if in_garbage:
+                garbage_score += 1
+        i += 1
+    print(group_score)
+    print(garbage_score)
+
+
+def main():
+    data = open(0).read().strip()
+    part_1(data)
+
+
+if __name__ == "__main__":
+    main()