1 files changed, 5 insertions, 0 deletions
diff --git a/progs/a540.py b/progs/a540.py
new file mode 100644
index 0000000..ebc10f0
--- /dev/null
+++ b/progs/a540.py
@@ -0,0 +1,5 @@
+def answer(L,R): 
+    if (2 * L <= R): 
+        return (L ,2*L)
+    else: 
+        return (-1) 
+\ No newline at end of file