diff --git a/heimavinna.py b/heimavinna.py
new file mode 100644
index 0000000..266d22d
--- /dev/null
+++ b/heimavinna.py
@@ -0,0 +1,12 @@
+problems = input().strip().split(";")
+expanded = []
+for problem in problems:
+    if "-" in problem:
+        start = int(problem[: problem.index("-")])
+        stop = int(problem[problem.index("-") + 1 :])
+        for i in range(start, stop + 1):
+            expanded.append(i)
+    else:
+        expanded.append(int(problem))
+expanded = set(expanded)
+print(len(expanded))