随笔分类 - 其他 水题
摘要：B. Array Sharpening time limit per test1 second memory limit per test256 megabytes You're given an array a1,…,an of n non negative integers. Let's cal
阅读全文
摘要：A. Even But Not Even time limit per test1 second memory limit per test256 megabytes Let's define a number ebne (even but not even) if and only if its
阅读全文
摘要：B. PIN Codes A PIN code is a string that consists of exactly 4 digits. Examples of possible PIN codes: 7013, 0000 and 0990. Please note that the PIN c
阅读全文
摘要：A. Sweet Problem the first pile contains only red candies and there are r candies in it, the second pile contains only green candies and there are g c
阅读全文
摘要：A. Math Problem Your math teacher gave you the following problem: There are n segments on the x axis, [l1;r1],[l2;r2],…,[ln;rn]. The segment [l;r] inc
阅读全文
摘要：C. Dominated Subarray Let's call an array 𝑡 dominated by value 𝑣 in the next situation. At first, array 𝑡 should have at least 2 elements. Now, let
阅读全文
摘要：B. Magic Stick Recently Petya walked in the forest and found a magic stick. Since Petya really likes numbers, the first thing he learned was spells fo
阅读全文
摘要：A. Two Rival Students There are 𝑛 students in the row. And there are two rivalling students among them. The first one is in position 𝑎, the second i
阅读全文
摘要：B. Grow The Tree Gardener Alexey teaches competitive programming to high school students. To congratulate Alexey on the Teacher's Day, the students ha
阅读全文
摘要：A. Integer Points DLS and JLS are bored with a Math lesson. In order to entertain themselves, DLS took a sheet of paper and drew 𝑛 distinct lines, gi
阅读全文
摘要：B1. Character Swap (Easy Version) This problem is different from the hard version. In this version Ujan makes exactly one exchange. You can hack this
阅读全文
摘要：A. Maximum Square Ujan decided to make a new wooden roof for the house. He has 𝑛 rectangular planks numbered from 1 to 𝑛. The 𝑖 th plank has size �
阅读全文
摘要：A. Payment Without Change You have a coins of value n and b coins of value 1. You always pay in exact change, so you want to know if there exist such
阅读全文
摘要：B2. TV Subscriptions (Hard Version) The only difference between easy and hard versions is constraints. The BerTV channel every day broadcasts one epis
阅读全文
摘要：A. Forgetting Things Kolya is very absent minded. Today his math teacher asked him to solve a simple problem with the equation 𝑎+1=𝑏 with positive i
阅读全文
摘要：B. Tokitsukaze and Mahjong time limit per test1 second memory limit per test256 megabytes Tokitsukaze is playing a game derivated from Japanese mahjon
阅读全文
摘要：D2. RGB Substring (hard version) inputstandard input outputstandard output The only difference between easy and hard versions is the size of the input
阅读全文
摘要：C. Array Splitting You are given a sorted array 𝑎1,𝑎2,…,𝑎𝑛 (for each index 𝑖 1 condition 𝑎𝑖≥𝑎𝑖−1 holds) and an integer 𝑘. You are asked to d
阅读全文
摘要：B. Bear and Friendship Condition 题目连接： http://codeforces.com/contest/791/problem/B Description Bear Limak examines a social network. Its main function
阅读全文
摘要：B. Anton and Classes 题目连接： http://codeforces.com/contest/785/problem/B Description Anton likes to play chess. Also he likes to do programming. No wond
阅读全文
