onlyblues

摘要： E - Revenge of "The Salary of AtCoder Inc." Problem Statement Aoki, an employee at AtCoder Inc., has his salary for this month determined by an intege 阅读全文

摘要： D. Blocking Elements You are given an array of numbers $a_1, a_2, \ldots, a_n$. Your task is to block some elements of the array in order to minimize 阅读全文

摘要： F - Negative Traveling Salesman Problem Statement There is a weighted simple directed graph with $N$ vertices and $M$ edges. The vertices are numbered 阅读全文

摘要： F - Nim Problem Statement You are given integers $N,A_1,A_2,A_3$. Find the number, modulo $998244353$, of triples of positive integers $(X_1,X_2,X_3)$ 阅读全文

摘要： 我谔谔，数位 dp 几年了还不会，学的都是些奇奇怪怪的写法，导致每次比赛遇到数位 dp 的题要么不会，要么写半天。灵神的数位 dp 模板其实很早就有看过，不过当时不是很理解递归的含义于是放弃了，最近重新来回来看发现还是递归好写，不仅简短而且基本都是一个框架，这就可以大大减少思考量，基本只要遇到数位 阅读全文

摘要： G. Mischievous Shooter Once the mischievous and wayward shooter named Shel found himself on a rectangular field of size $n \times m$, divided into uni 阅读全文

摘要： F1. Smooth Sailing (Easy Version) The only difference between the two versions of this problem is the constraint on $q$. You can make hacks only if bo 阅读全文

摘要： B - Arithmetic Progression Subsequence Problem Statement You are given a sequence $A$ of length $N$ consisting of integers between $1$ and $\textbf{10 阅读全文

摘要： F - Usual Color Ball Problems Problem Statement You are given positive integers $N$, $M$, $K$, and a sequence of positive integers of length $N$, $(C_ 阅读全文

摘要： D. Array Repetition Jayden has an array $a$ which is initially empty. There are $n$ operations of two types he must perform in the given order. Jayden 阅读全文