http://arc066.contest.atcoder.jp/tasks/arc066_c?lang=en 这类题目是我最怕的,没有什么算法,但是却很难想, 这题的题解是这样的,观察到,在+号里面添加括号是没用的, 那么看看减号,任意两个相邻减号, 比如1 - 20 + 8 - 13 - 5 + 6 + 7 - 8 可以变成1 - (20 + 8 - 13) + 5 + 6 + 7 + 8 为什么后面的可以全部都变成正数呢? 因为可以这样变,1 - (20 + 8 - 13 - (5 + 6…

Given a string representing an expression of fraction addition and subtraction, you need to return the calculation result in string format. The final result should be irreducible fraction. If your final result is an integer, say 2, you need to change…

Given a string representing an expression of fraction addition and subtraction, you need to return the calculation result in string format. The final result should be irreducible fraction. If your final result is an integer, say 2, you need to change…

Given a string representing an expression of fraction addition and subtraction, you need to return the calculation result in string format. The final result should be irreducible fraction. If your final result is an integer, say 2, you need to change…

Problem statement: Given a string representing an expression of fraction addition and subtraction, you need to return the calculation result in string format. The final result should be irreducible fraction. If your final result is an integer, say 2,…

Given a string representing an expression of fraction addition and subtraction, you need to return the calculation result in string format. The final result should be irreducible fraction. If your final result is an integer, say 2, you need to change…

Given a string representing an expression of fraction addition and subtraction, you need to return the calculation result in string format. The final result should be irreducible fraction. If your final result is an integer, say 2, you need to change…

[LeetCode]592. Fraction Addition and Subtraction 解题报告(Python) 标签(空格分隔): LeetCode 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.me/ 题目地址:https://leetcode.com/problems/fraction-addition-and-subtraction/description/ 题目描述: Given a string representi…

[gym101982M][思维好题][凸壳]Mobilization 题目链接 20182019-acmicpc-pacific-northwest-regional-contest-div-1-en.pdf 题目大意 现在有\(n\)种士兵,每种士兵有一个血量\(h_i\)和潜力\(p_i\)以及花销\(c_i\). 你一共有\(C\)块钱,现在你要用这些钱去雇佣士兵,你雇佣某种士兵的数量可以是任意实数(也就是说并不一定要整数).最后你构建出来军团的战斗力等于总血量与总潜力的乘积. \((n\…

土题大战Vol.0 A. 笨小猴 思维好题 题目描述 驴蛋蛋有 \(2n + 1\) 张 \(4\) 星武器卡片,每张卡片上都有两个数字,第 \(i\) 张卡片上的两个数字分别是 \(A_i\) 与 \(B_i\). 现在驴蛋蛋要从所有卡片中选出恰好 \(n + 1\) 张卡片,然后计算他选出的所有卡片中 \(A_i\) 的和与 \(B_i\) 的和.他的目的是要使他选出的卡片的\(A_i\) 的和与 \(B_i\) 的和,都要分别大于剩下 \(n\) 张没选的卡片的 \(A_i\) 的和与 \…