onlyblues

摘要： Count of Sub-Multisets With Bounded Sum You are given a 0-indexed array nums of non-negative integers, and two integers l and r. Return the count of s 阅读全文

摘要： G. Anya and the Mysterious String Anya received a string $s$ of length $n$ brought from Rome. The string $s$ consists of lowercase Latin letters and a 阅读全文

摘要： C. Decreasing String Recall that string $a$ is lexicographically smaller than string $b$ if $a$ is a prefix of $b$ (and $a \ne b$), or there exists an 阅读全文

摘要： G. ABBC or BACB You are given a string $s$ made up of characters $\texttt{A}$ and $\texttt{B}$. Initially you have no coins. You can perform two types 阅读全文

摘要： C. Card Game There are $n$ cards stacked in a deck. Initially, $a_{i}$ is written on the $i$-th card from the top. The value written on a card does no 阅读全文

摘要： D. Sum of XOR Functions You are given an array $a$ of length $n$ consisting of non-negative integers. You have to calculate the value of $\sum_{l=1}^{ 阅读全文

摘要： D. Effects of Anti Pimples Chaneka has an array $[a_1,a_2,\ldots,a_n]$. Initially, all elements are white. Chaneka will choose one or more different i 阅读全文

摘要： D. Prefix Purchase You have an array $a$ of size $n$, initially filled with zeros ($a_1 = a_2 = \ldots = a_n = 0$). You also have an array of integers 阅读全文

摘要： Python缩进 在 Python 中，代码块没有显式的开始/结束或大括号来标记代码块的开始和结束。 相反，代码块是通过缩进定义的。 我们考虑一个极其简化的 Python 子集，其只有两种类型的语句：简单语句和 $For$ 语句。 简单语句（Simple statements）仅占一行，每行一个。 阅读全文

摘要： D1. Candy Party (Easy Version) This is the easy version of the problem. The only difference is that in this version everyone must give candies to exac 阅读全文