摘要：
People in Silverland use coins.They have coins of value A1,A2,A3...An Silverland dollar.One day Tony opened his money-box and found there were some co 阅读全文
posted @ 2019-02-03 19:49
kongbb
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Volodya is an odd boy and his taste is strange as well. It seems to him that a positive integer number is beautiful if and only if it is divisible by 阅读全文
posted @ 2019-02-03 17:43
kongbb
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Keeping track of all the cows can be a tricky task so Farmer John has installed a system to automate it. He has installed on each cow an electronic ID 阅读全文
posted @ 2019-02-03 17:38
kongbb
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