Blank compact discs are on sale in packages of three kinds. A package with 100 disсs costs 100 UAH, one with 20 discs costs 30 UAH, and one disс costs 2 UAH. What minimal sum of money should you pay to buy n such disсs?
The natural number n (n ≤ 1000).
Print the minimal sum to buy n disсs.
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