auto save

demo.py

-def func(num):
-    if num == 1:
+# def func(num):
+#     if num == 1:
+#         return 1
+#     sum = func(num-1)
+#     a = num + sum
+#     return a
+# print(func(5))
+
+def func(n):
+    if n<=2:
         return 1
-    sum = func(num-1)
-    a = num + sum
-    return a
-print(func(5))
\ No newline at end of file
+    elif n > 2:
+        value = func(n-1)+func(n-2)
+        return value
+result = func(50)
+print(result) 
\ No newline at end of file