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Турниры > CEN254 PRE1B > задача:


2. 51085 - xyx Divisible by k

CEN254 PRE1B

Старт: 04.апр.2017 в 13:18:00
Финиш: 04.апр.2017 в 14:25:00
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• Вопросы к жюри (2)

Задачи турнира

• 1. 51084 - Reflect a matrix
• 2. 51085 - xyx Divisible by k

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Лимит времени 2000/4000/4000/4000 мс. Лимит памяти 65000/65000/65000/65000 Кб.
Question by Ibrahim Mesecan.

xyx Divisible by k

Question: There's a number which contains only two given digits: x and y. Check if there's any at most 9-digit number which is divisible by k. For example, if you're given the digits 2 and 5; and the divisor 15, 225 is the smallest number divisible by 15. For example if you're given: the digits 3 and 6; and the divisor 12, 36 is the smallest number divisible by 12.

Input specification: You will be given two digits and a number (k). The digits are different than 0; and k is between 1 and 9999.

Output specification: Show the smallest number divisible by k. If there is no such number, show -1;

Sample Input Sample Output
2 3 6
222

Explanation: The following are not divisible by 6: 2; 3; 22; 23; 32; 33; So, 222 is the smallest number divisible by 6.



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