A. Lala Land and Apple Trees Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/558/problem/A Description Amr lives in Lala Land. Lala Land is a very beautiful country that is located on a coordinate line. Lala Land is famous…
[CF简单介绍] 提交链接:A. Lala Land and Apple Trees 题面: A. Lala Land and Apple Trees time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Amr lives in Lala Land. Lala Land is a very beautiful country tha…
Amr lives in Lala Land. Lala Land is a very beautiful country that is located on a coordinate line. Lala Land is famous with its apple trees growing everywhere. Lala Land has exactly n apple trees. Tree number i is located in a position xi and has ai…
# [Codeforces #312 div2 A]Lala Land and Apple Trees 首先,此题的大意是在一条坐标轴上,有\(n\)个点,每个点的权值为\(a_{i}\),第一次从原点开始走,方向自选(<- or ->),在过程中,若遇到一个权值>0的点,则将此权值计入答案,并归零.当次.此方向上的所有点均为0后,输出此时的答案. 然后,进行分析: 我们很容易想到这是一个贪心,我们将正的和负的分别存入两个数组,最初的方向为: \(zhengsum > fusum…
B. Amr and The Large Array Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/558/problem/B Description Amr has got a large array of size n. Amr doesn't like large arrays so he intends to make it smaller. Amr doesn't care abou…
[比赛链接]click here~~ A. Lala Land and Apple Trees: [题意]: AMR住在拉拉土地. 拉拉土地是一个很漂亮的国家,位于坐标线.拉拉土地是与著名的苹果树越来越随处可见. 拉拉土地恰好n苹果树.树数i位于位置xi和具有人工智能的苹果就能够了增长.阿姆鲁希望从苹果树收集苹果. AMR眼下维持在X =0的位置.在開始的时候,他能够选择是否去左边或右边.他会在他的方向继续下去.直到他遇见一棵苹果树,他之前没有參观.他会採取全部的苹果.然后扭转他的方向.继续走这…
好吧,再一次被水题虐了. A. Lala Land and Apple Trees 敲码小技巧:故意添加两个苹果树(-1000000000, 0)和(1000000000, 0)(前者是位置,后者是价值). B. Amr and The Large Array 找出最长的是哪些数字,然后再对这些数字找最大区间. 我居然还想用两个指针加有限队列维护!TAT C. Amr and Chemistry 首先,我们可以计算由x变为y的代价.O(1) 于是我枚举了\(a_0\)可以变为哪些数(最多\(m^…
题目链接: A. Lala Land and Apple Trees time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Amr lives in Lala Land. Lala Land is a very beautiful country that is located on a coordinate line. Lala L…
time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Amr lives in Lala Land. Lala Land is a very beautiful country that is located on a coordinate line. Lala Land is famous with its apple trees grow…
C. Amr and Chemistry Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/558/problem/C Description Amr loves Chemistry, and specially doing experiments. He is preparing for a new interesting experiment. Amr has n different type…
