вот

m = int(input())
n = int(input())
A = []
for i in range(m+n):
    A.append(int(input()))

if n < m:

    for i in range(0,m,n):
        for j in range(n):
            s = A[i+j]
            A[i+j] = A[m+j]
            A[m+j] = s
else:
    for i in range(0,n,m):
        for j in range(m):
            s = A[i+j]
            A[i+j] = A[m+j+1]
            A[m+j+1] = s

print(A)