摘要:
Description Farmer John wants to set up a telephone line at his farm. Unfortunately, the phone company is uncooperative, so he needs to pay for some o 阅读全文
摘要:
A - Fence Repair Farmer John wants to repair a small length of the fence around the pasture. He measures the fence and finds that he needs N (1 ≤ N ≤ 阅读全文
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A. Key races A. Key races Two boys decided to compete in text typing on the site "Key races". During the competition, they have to type a text consist 阅读全文