摘要： Problem DescriptionGiven two matrices A and B of size n×n, find the product of them.bobo hates big integers. So you are only asked to find the result ... 阅读全文

摘要： DescriptionThe citizens of Bytetown, AB, could not stand that the candidates in the mayoral election campaign have been placing their electoral poster... 阅读全文

摘要： Problem DescriptionTina Town is a friendly place. People there care about each other.Tina has a ball called zball. Zball is magic. It grows larger eve... 阅读全文

摘要： DescriptionThe cows are journeying north to Thunder Bay in Canada to gain cultural enrichment and enjoy a vacation on the sunny shores of Lake Superio... 阅读全文

摘要： Problem DescriptionAll you know Goldbach conjecture.That is to say, Every even integer greater than 2 can be expressed as the sum of two primes. Today... 阅读全文

摘要： DescriptionThere are several ancient Greek texts that contain descriptions of the fabled island Atlantis. Some of these texts even include maps of par... 阅读全文

摘要： Problem DescriptionA simple problem Problem Description You have a multiple set,and now there are three kinds of operations:1 x : add number x to set2... 阅读全文

摘要： Problem DescriptionThere arenblack balls andmwhite balls in the big box.Now, DZY starts to randomly pick out the balls one by one. It forms a sequence... 阅读全文

摘要： Description给出了一个序列，你需要处理如下两种询问。"Cabc"表示给[a, b]区间中的值全部增加c(-10000≤c≤10000)。"Qab"询问[a, b]区间中所有值的和。Input第一行包含两个整数N,Q。1≤N,Q≤100000.第二行包含n个整数，表示初始的序列A(-1000... 阅读全文

摘要： DescriptionThe inversion number of a given number sequence a1, a2, ..., an is the number of pairs (ai, aj) that satisfy i aj.For a given sequence of ... 阅读全文