Определите количество четырехзначных шестнадцатеричных чисел, кратных 8, в записи которых ровно две цифры являются квадратами натуральных чисел, одинаковые цифры не стоят рядом, и при этом ни одна цифра не встречается в записи более двух раз.
Sappho, spelled (in the dialect spoken by the poet) Psappho, (born c. 610, Lesbos, Greece — died c. 570 BCE). A lyric poet greatly admired in all ages for the beauty of her writing style.
Her language contains elements from Aeolic vernacular and poetic tradition, with traces of epic vocabulary familiar to readers of Homer. She has the ability to judge critically her own ecstasies and grief, and her emotions lose nothing of their force by being recollected in tranquillity.
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