# DCP-418: Can You Answer Me? Back to All Problems

Medium Math > Counting

You are given an array **A** of length **N** consisting of integer numbers. Your task is to determine the value returned by following “Answer_Me” function. datatype Answer_Me(datatype N,datatype A[]) { datatype count=0; for(datatype i=1; i<=N; i++) { for(datatype j=i+1; j<=N; j++) { datatype product=A[i]*A[j]; if( IsPerfectSquare( product ) ==true ) { count++; } } } return count; } In above "Answer_Me" function, **IsPerfectSquare** is another function, which returns true if the value passed to its parameter is a Perfect Square number.<br> Note: **Perfect Square** is a number **N** such that there exists two integer numbers **X** and **Y**, not necessarily different, such that **X*Y=N**. Input: ------ Input starts with an integer **T (1<=T=5)**, denoting the number of test cases. Each case contains an integer **N (1 ≤ N ≤ 100000 )** denoting the number of elements of array **A**. <br>The next line will contain **N** integers separated a space, denoting the elements of the array A **(1<=Ai<=100)**. Output: ------- For each case of input, output the result of above function as described in the problem statement in a single line. Sample Input ------------ 1 5 1 2 4 3 5 Sample Output ------------- 1

### Problem Limits

 Language Time Limit (seconds) C 1.00 C++ 1.00 C++14 1.00 C# 2.00 Go 2.00 Java 2.00 JavaScript 2.00 Objective-C 2.00 Perl 2.00 PHP 2.00 Python 2.00 Python3 2.00 Ruby 2.00 VB.Net 2.00

# 72/506

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