add: day07: part1

2025/day07/part1.py

@@ -0,0 +1,27 @@
+text: str
+
+with open("input.txt") as f:
+    text = f.read()
+
+total: int  = 0
+
+lines = [[c for c in line] for line in text.splitlines()]
+
+roots: set[int] = set()
+roots.add(len(lines[0]) // 2)
+
+for i, line in enumerate(lines):
+    for j, c in enumerate(line):
+        if (c == '^' and j in roots):
+            roots.remove(j)
+            roots.add(j - 1)
+            roots.add(j + 1)
+            total += 1
+# debug print()
+    for root in roots:
+        line[root] = "|"
+
+for line in lines:
+    print("".join(line))
+
+print(total)