IOM 2018, Блиц, английски — Задача 38

OLYMPIAD OF METROPOLISES. Moscow, September 3 · 3 септември 2018 г.

Условие

Chris has an unlimited number of 2-dollar, 7-dollar and 10-dollar coins. He wants to pay an amount of 48 dollars exactly. What is the minimum number of coins required?

Отговори

Решение

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Оригинал в Архива: blitz.pdf · официални решения: blitz-answers.pdf