diff --git a/2025/day05/part1.py b/2025/day05/part1.py
new file mode 100644
index 0000000..88cb004
--- /dev/null
+++ b/2025/day05/part1.py
@@ -0,0 +1,24 @@
+text: str
+
+with open("input.txt") as f:
+    text = f.read()
+
+total: int  = 0
+
+
+ranges_str, dates = text.split("\n\n")
+
+ranges: list[tuple[int, int]] = []
+for range_str in ranges_str.splitlines():
+    start, stop = range_str.split("-")
+    ranges.append((int(start), int(stop)))
+
+dates: list[int] = [int(date) for date in dates.splitlines()]
+dates.sort()
+
+for date in dates:
+    for start, stop in ranges:
+        if (start <= date <= stop):
+            total += 1 
+            break
+print(total)
\ No newline at end of file