摘要：
C. Inna and Candy Boxes Inna loves sweets very much. She has n closed present boxes lines up in a row in front of her. Each of these boxes contains ei 阅读全文
摘要：
Sequence I Problem Description Mr. Frog has two sequences a1,a2,⋯,an and b1,b2,⋯,bm and a number p. He wants to know the number of positions q such th 阅读全文
摘要：
Sequence II Problem Description Mr. Frog has an integer sequence of length n, which can be denoted as a1,a2,⋯,an There are m queries.In the i-th query 阅读全文