摘要：A. Kyoya and PhotobooksKyoya Ootori is selling photobooks of the Ouran High School Host Club. He has 26 photos, labeled "a" to "z", and he has compile... 阅读全文

摘要：A. Vanya and TableVanya has a table consisting of100rows, each row contains100cells. The rows are numbered by integers from1to100from bottom to top, t... 阅读全文

摘要：E. Soldier and Traveling， D-Soldier and Number Game， C-Soldier and Cards， B - Soldier and Badges， A. Soldier and Bananas； 阅读全文

摘要：Codeforces Round #307 (Div. 2) 阅读全文