Codeforces Round #677(Div.3)
Codeforces Round #677 (Div. 3)
目录Codeforces Round #677 (Div. 3)A. Boring ApartmentsB. Yet Another BookshelfC. Dominant PiranhaD. Districts Connection
A. Boring Apartments
题意:
有一栋公寓有编号为1~10000的房间,从1开始拨打电话到n为止,求拨号到所有每位数字相同(例如“11”“9999”)的房间按下的次数和。例如,如果n==22
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2020-10-29 22:35:01 ·
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