5.4

tablica = [[23, 22, 33, 342], [44, 55, 66, 127], [77, 88, 99, 69]]

najw = tablica[0][0]
najm = tablica[0][0]

for i in range(len(tablica)):
    for j in range(len(tablica[i])):
        if tablica[i][j] < najm:
            najm = tablica[i][j]
        if tablica[i][j] > najw:
            najw = tablica[i][j]

print(najm, najw)