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a.py

@@ -5,5 +5,10 @@ def func(n):
         value = func(n-1)+func(n-2)
         return value
 
-result = func(8)
-print(result)
\ No newline at end of file
+i=3
+while True:
+    if func(i) > 20:
+        print(str(i),'bigger than 20')
+        break
+    else:        
+        i+=1
\ No newline at end of file