
100  Let's Celebrate the 100th Contest on ZOJ!  100I
Give you an integer number n. Please find out the answer of the expression below.
Please note that the submission limit of this problem is 1KB. InputThere are multiple test cases (No more than 100). Each test case contains a single integer n (1 <= n <= 100). OutputFor each test case, print the answer in a line. The number should be rounded into 100 decimal digits. Sample Input1 2 Sample Output2.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 2.7071067811865475244008443621048490392848359376884740365883398689953662392310535194251937671638207864 Author: JIANG, Kai Source: Let's Celebrate the 100th Contest on ZOJ! 