cisla = [int(_) for _ in input().split()]
hodnota = int(input())
mam = "eur"
for i in range(len(cisla)-1): #po predposledne
if cisla[i] < cisla[i+1] and mam == "eur": #cena zajtra stupne, nakup zlato
print("nakup za", cisla[i])
mam = "zlato"
hodnota /= cisla[i]
if cisla[i] > cisla[i+1] and mam == "zlato": #cena zajtra klesne, predaj zlato
print("predaj za", cisla[i])
mam = "eur"
hodnota *= cisla[i]
print(hodnota)
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