Daily Challenge - Integers Sum Flip Kth bit ProgramID - 13639

n=int(input())

l=list(map(int,input().split()))

k=int(input())

s=0

for i in range(n):

    b=bin(l[i])[2:]

    print(len(b))

    if(len(b)<k):

        s+=l[i]

    else:

        s+=l[i]^(1<<k-1)

print(s)