diff --git a/15/b/1.py b/15/b/1.py
new file mode 100644
index 0000000..4c469f1
--- /dev/null
+++ b/15/b/1.py
@@ -0,0 +1,7 @@
+temp = input()
+if "C" in temp:
+   temp = float (temp[:-1])
+   print(temp*9/5+32, "F", sep="")
+else:
+   temp = float (temp[:-1])
+   print((temp-32)*5/9, "C", sep="")