Fibonacci Member

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Level EASY

Given a number N, figure out if it is a member of fibonacci series or not. Return true if the number is member of fibonacci series else false.

Fibonacci Series is defined by the recurrence

    F(n) = F(n-1) + F(n-2)

where F(0) = 0 and F(1) = 1


Input Format :
Integer N
Output Format :
true or false
Constraints :
0 <= n <= 10^4
Sample Input 1 :
5
Sample Output 1 :
true
Sample Input 2 :
14
Sample Output 2 :
false

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