THE BUNKING GUY SOLUTIONS BUNKGUY

THE BUNKING GUY SOLUTION

There are N understudies in a class, roll numbered from 1 to N. At the point when an understudy doesn’t care for a subject, he bunks the talk. Be that as it may, for a given talk just a single understudy bunks and rest all joins in. The educator needs to discover the move number of the understudy bunking the talk. So for a given N and an exhibit An of length N-1, help the educator in finding the missing understudy. 

 

Info: 

The principal line contains a solitary whole number T indicating the quantity of experiments. The principal line of each experiment conatins a number N. The second line of each experiment contains N-2 space seperated whole numbers, A[1],A[2],… ,A[n-1] indicating the estimations of A. 

 

Yield: 

For each experiment print a solitary whole number – the missing move number of understudy on new line. 

 

Imperatives 

1≤T≤1000 

2≤N≤109 

1≤A[i]≤109 

 

Test Input: 

3 1 2 

 

Test Output: 

4

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