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CF615A Bulbs 题解
Content 有 \(n\) 个灯，一开始它们都是关着的。有 \(m\) 个按钮，每个按钮可以开 \(k\) 盏灯。求能否通过这 \(m\) 个按钮使得所有灯全部都开着。 数据范围：\(1\leqslant n,m\leqslant100,k\leqslant n\)。 Solution 只要所有的按钮按下去能使所有灯开那就可以使所有灯开，否则一定不能[LeetCode] 319. Bulb Switcher
There are n bulbs that are initially off. You first turn on all the bulbs, then you turn off every second bulb. On the third round, you toggle every third bulb (turning on if it's off or turning off if it's on). For the ith round, you toggle eve319. Bulb Switcher
问题： 给定n个初始状态为off的灯， 第1次，按 1*i 号灯的开关。 第2次，按 2*i 号灯的开关。 ... 第n次，按 n 号灯的开关。 求最后on的灯共有几个。 Example 1: Input: n = 3 Output: 1 Explanation: At first, the three bulbs are [off, off, off]. After the first round, the three10.22补题
E Nothing is eternal in the world, Kostya understood it on the 7-th of January when he saw partially dead four-color garland. Now he has a goal to replace dead light bulbs, however he doesn't know how many light bulbs for each color are required. It[leetcode]K Empty Slots
使用bucket class Solution: def kEmptySlots(self, bulbs: List[int], K: int) -> int: size = len(bulbs) // (K + 1) + 1 maxBuckets = [None] * size minBuckets = [None] * size for i in range(len(bulbs)): bulb =Codeforces Round #612 (Div. 2) C. Garland 动态规划
Codeforces Round #612 (Div. 2) C. Garland 动态规划 题目链接： https://codeforces.com/contest/1287/problem/C C. Garland time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Vadim loves decorating the Chrpython-用于存储图形的格式
我正在从事一个涉及使用从其他来源提取的图形的项目.目前,我们正在使用python的networkx模块来分析图形. 我现在面临的任务是选择一种用于存储图形的格式.对于纯基于python的解决方案,Pickle似乎是一个不错的选择.但是,我们现在处于原型开发阶段,很有可能由于性能和可伸缩性问题而2019上海ICPC网络赛B Light bulbs（差分+优化）
时间限制：1000ms 内存：8192K There are NN light bulbs indexed from 00 to N-1N−1. Initially, all of them are off. A FLIP operation switches the state of a contiguous subset of bulbs. FLIP(L, R)FLIP(L,R) means to flip all bulbs xx such that L \leq日常补题——ICPC网络赛上海站第二题B Light bulbs
日常补题——ICPC网络赛上海站第二题B Light bulbs 题目链接： https://nanti.jisuanke.com/t/41399 博客借鉴： https://blog.csdn.net/weixin_43701790/article/details/100867368 题目大意： 每次操作使 L，R区间内的等的状态改变，最后一共有多少开着的灯 题解： 这道题的时间限制是1000ms2019 ACM-ICPC 上海网络赛 B. Light bulbs (差分)
题目链接：Light bulbs 比赛链接：The Preliminary Contest for ICPC Asia Shanghai 2019 题意 给定 \(N\) 个灯泡 (编号从 \(0\) 到 \(N - 1\))，初始都是关闭的。 给定 \(M\) 个操作，每个操作包含 \(L\) 和 \(R\)，对 \([L, R]\) 内的所有灯泡改变状态。 求最后有几个灯泡是亮的。 思路2019上海网络赛B.Light bulbs (差分)
题意： T组案例 每组案例： n个灯泡，m次操作 每次操作把区间(L,R)内的灯泡翻转(开变关，关变开) 问m次操作之后有多少灯泡是亮着的 链接 数据范围： T<=1e3 n<=1e6 m<=1e3 时限1s，内存8000k 分析： 空间小时间少恶心人 差分每组O(n)都tle 但是因为m小，所以考虑从m入手 比赛的时候一手离319. Bulb Switcher
There are n bulbs that are initially off. You first turn on all the bulbs. Then, you turn off every second bulb. On the third round, you toggle every third bulb (turning on if it's off or turning off if it's on). For the i-th round, you toggle e[Swift]LeetCode319. 灯泡开关 | Bulb Switcher
There are n bulbs that are initially off. You first turn on all the bulbs. Then, you turn off every second bulb. On the third round, you toggle every third bulb (turning on if it's off or turning off if it's on). For the i-th round, you toggle e