while True:
try:
N = int(input())
s = input().split()
x = int(input())
print(s[-x] if x != 0 else 0)
except:
break
# N = int(input())
# s = input().split()
# x= int(input())
# print(s[-x])
while True:
try:
N = int(input())
s = input().split()
x = int(input())
print(s[-x] if x != 0 else 0)
except:
break
# N = int(input())
# s = input().split()
# x= int(input())
# print(s[-x])