diff --git a/triarea.py b/triarea.py
new file mode 100644
index 0000000..a18049e
--- /dev/null
+++ b/triarea.py
@@ -0,0 +1,3 @@
+h, b = map(int, input().split(" "))
+
+print(h*b/2)
\ No newline at end of file