Small factorials Solved Problem code: FCTRL2, factorialsfctrl2

Small factorials Solved Problem code: FCTRL2, factorialsfctrl2

1 import sys 2 3 4 def fact (n): 5 final = n 6 while n> 1: 7 final * = n-1 8 n-= 1 9 return final # logic rigorous, do not forget return10 11 12 def main (): 13 t = int (sys. stdin. readline () 14 for n in sys. stdin: 15 print fact (int (n) # Reading String conversion is a common pitfall 16 17 18 main ()

// Second, use a ready-made Library

1 from math import factorial # Familiar with this call method 2 3 4 def main (): 5 t = int (raw_input () 6 for I in range (t ): 7 print factorial (int (raw_input () 8 9 10 main ()

 

Learning

How to call external Libraries

Error

The function forgot return, and the idea was not rigorous.

I forgot to convert the data type during reading.

The conversion of the py type is more important than that of the C