import random

a = []
b = []
c = []


def random_list(list_c):
    for x in range(random.randint(10, 50)):
        list_c.append(random.randint(1, 100))


random_list(a)
random_list(b)

for element in a:
    if element in b:
        c.append(element)

print(f' List A : {a}')
print(f' List B : {b}')
print(f' Values on both lists : {c}')