https://www.codechef.com/problems/CDIT01
result=[]
def sovle():
a,b=map(int,input().split(" "))
arr=list(map(int,input().split(" ")))
for i in range(a,b+1):
# TODO: write code...
if i not in arr:
result.append(i)
break
try:
test=int(input())
for _ in range(test):
sovle()
for item in result:
print(item)
except:
pass