Problem description
Give a containing n A sequence of integers , Ask for integers a The first occurrence in a sequence is the number of .
Input format
The first line contains an integer n.
The second line contains n Nonnegative integers , For a given sequence , Each number in the sequence is not greater than 10000.
The third line contains an integer a, For the number to be found .
Output format
If a In the sequence , Output where it first appeared ( Location slave 1 Numbered starting ), Otherwise output -1.
Example input
6
1 9 4 8 3 9
9
Sample output
2
summary ： Another use map Functional
n=int(input())
b=list(map(int,input().split()))
c=int(input())
k=1
for i in b:
if c==i:
print(k)
break
k=k+1
else:print(-1)
