WEBSITE RETURNED, HOWEVER SUBMIT QUANTITY IS RESTRICTED PER DAY TO VERY LITTLE (UNDER JUDGE0 NEW POLICY, API PROVIDER). Therefore it is very much for you to pay attention TEST CAREFULLY CODE BEFORE SUBMIT.

Total

Threads:

Input: 1 integer n

Output: Xuất tổng s1 trên 1 current, tổng s2 trên 1 current

For example:

input:
5
output:
9
0.3577

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