Evaluate the expression
Submissions: 699   Accuracy:

31.38%

  Difficulty: Basic   Marks: 1

Given a number N, write a program to evaluate below expression:
            f(n-1)*f(n+1) - f(n)*f(n)

Input:
First line of input contains a single integer T which denotes the number of test cases. Then T test cases follows. First line of each test case contains a single integer N.

Output:
For each test, print the value after evaluating above expression for N.

Constraints:
1<=T<=100
1<=N<=105

Examples:
Input:
1
5
Output:
-1

** For More Input/Output Examples Use 'Expected Output' option **

Contributor: Harsh Agarwal
Author: harsh.agarwal0


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