devu and friendship testing codechef solution
t=int(input())
for i in range(t):
n=int(input())
a=list(map(int,input().split()))
b=set(a)
print(len(b))devu and friendship testing codechef solution
t=int(input())
for i in range(t):
n=int(input())
a=list(map(int,input().split()))
b=set(a)
print(len(b))Copyright © 2021 Codeinu
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