from array import *
c_array=array('i',[])
N=int(input("Enter the total number of elements : "))
print("\n Enter all ",N,"elements")
for i in range(N):
    c_array.append(int(input()))
key=int(input("Enter the key to be searched : " ))
flag="false"
for i in range(N):
    if(key==c_array[i]):
        flag="true"
        print("\n Key is found at",i+1,"location")
        break
    if flag=="false":
        print("key is not found :")