X = [2, 5, 3, 2, 4]
Y = [3, 7, 2, 4, 2]

print('Løsning 1')

for i in range(len(X)):
    for j in range(len(Y)):
        if X[i] == Y[j]:
            print((i, j))

print('Løsning 2')

for i, x in enumerate(X):
    for j, y in enumerate(Y):
        if x == y:
            print((i, j))

print('Løsning 3')

answer = [(i, j)
          for i, x in enumerate(X)
          for j, y in enumerate(Y)
          if x == y]
print(answer)