banan = "banán"


videli_jsme = ""
for kocka in banan:
    if kocka not in videli_jsme:
        videli_jsme = videli_jsme + kocka

print(len(videli_jsme))

marmelada = "banánová marmeláda"

videli_jsme = ""
for pismeno in marmelada:
    if pismeno not in videli_jsme and pismeno != " ":
        videli_jsme = videli_jsme + pismeno

print(len(videli_jsme))


# PAUZA DO 19.17