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zoj-3950
How Many NinesTime Limit: 1 Second Memory Limit: 65536 KBIf we represent a date in the format YYYY-MM-DD (for example, 2017-04-09), do you know how many 9s will appear in all the dates between Y1...原创 2018-04-19 21:47:40 · 234 阅读 · 0 评论 -
zoj-3983
Crusaders QuestTime Limit: 1 Second Memory Limit: 65536 KBCrusaders Quest is an interesting mobile game. A mysterious witch has brought great darkness to the game world, and the only hope for you...原创 2018-04-28 15:23:06 · 339 阅读 · 0 评论 -
zoj-2100
SeedingTime Limit: 2 Seconds Memory Limit: 65536 KBIt is spring time and farmers have to plant seeds in the field. Tom has a nice field, which is a rectangle with n * m squares. There are big sto...原创 2018-07-13 15:51:20 · 290 阅读 · 0 评论 -
The 2018 ACM-ICPC Asia Qingdao Regional Contest, Online
zoj4047 A Live Love DreamGrid is playing the music game Live Love. He has just finished a song consisting of n notes and got a result sequence A1,A2,...,An (Ai∈ {PERFECT, NON-PERFECT}). ...原创 2018-09-21 13:00:39 · 492 阅读 · 0 评论