Traceback (most recent call last): File "src.py", line 10, in <module> print(nn(a,n)) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File "src.py", line 5, in nn r=a*nn(a,n-1) File 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