Codechef 19:
https://www.codechef.com/submit/COVID19
for _ in range(int(input())):
n=int(input())
arr=[int(i) for i in input().split()]
min1=[]
c=0
d=[]
for i in range(n-1):
min1.append(arr[i+1]-arr[i])
min1.append(20)
for i in min1:
if int(i) <= 2:
c+=1
else:
d.append(c)
c=0
print(min(d)+1,max(d)+1)
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