[Basic] Missing number in array

Given an array of size n-1 and given that there are numbers from 1 to n with one missing, the missing number is to be found.

Input:

The first line of input contains an integer T denoting the number of test cases. The first line of each test case is N. The second line of each test case contains N-1 input C[i],numbers in array.

Output:

Print the missing number in array.

Constraints:

1 ≤ T ≤ 200
1 ≤ N ≤ 1000
1 ≤ C[i] ≤ 1000

Example:

Input:
2
5
1 2 3 5
10
1 2 3 4 5 6 7 8 10

Output:
4
9

def MissingNumber(n, arr):
    sumOfN = n*(n+1)/2
    return sumOfN - sum(arr)

t = int(input())
for i in range(t):
    n = int(input())
    arr = map(int, input().split())
    print(MissingNumber(n, arr))