思路好想,细节多的令人发指.. /* 反着判断:走完每个点=走过的路程=n*m-k 然后暴力判每行每列的目的地 每次走都能使走的范围缩小一行或者一列 */ #include<bits/stdc++.h> #include<vector> using namespace std; #define N 200005 #define ll long long vector<int>R[N],C[N];//每一行|列内的障碍 ll tot,n,m,k; int main(){…

A. Snacktower time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output According to an old legeng, a long time ago Ankh-Morpork residents did something wrong to miss Fortune, and she cursed them. S…

Nasty Hacks Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 3049    Accepted Submission(s): 2364 Problem Description You are the CEO of Nasty Hacks Inc., a company that creates small pieces of…

D. Ability To Convert time limit per test 1 second Cmemory limit per test 256 megabytes input standard input output standard output Alexander is learning how to convert numbers from the decimal system to any other, however, he doesn't know English le…

主要还是细节分析:线段树作为工具 Description 我们常常会说这样的话:“X年是自Y年以来降雨量最多的”.它的含义是X年的降雨量不超过Y年,且对于任意Y<Z<X,Z年的降雨量严格小于X年.例如2002,2003,2004和2005年的降雨量分别为4920,5901,2832和3890,则可以说“2005年是自2003年以来最多的”,但不能说“2005年是自2002年以来最多的”由于有些年份的降雨量未知,有的说法是可能正确也可以不正确的. Input 输入仅一行包含一个正整数n,为已知的…

Flow Layout Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 3091   Accepted: 2148 Description A flow layout manager takes rectangular objects and places them in a rectangular window from left to right. If there isn't enough room in one r…

P3926 SAC E#1 - 一道不可做题 Jelly [链接]:https://www.luogu.org/problem/show?pid=3926 题目背景 SOL君(炉石主播)和SOL菌(完美信息教室讲师)是好朋友. 题目描述 SOL君很喜欢吃蒟蒻果冻.而SOL菌也很喜欢蒟蒻果冻. 有一天,他们在一起搓炉石,而SOL菌则要拿出蒟蒻果冻招待他的客人. 蒟蒻果冻一般在a度下保存在冰箱里.但是刚拿出来的时候太冰了,需要加热.SOL菌打算用一种神奇的电炉加热蒟蒻果冻.根据观察,它有一个特点:…

找规律 设\(p_i=a_{i+1}-a_i\),则答案就是\(\sum_{i=1}^{n-1}p_i\). 考虑若将\(a_i\)加上\(x\)(边界情况特殊考虑),就相当于是将\(p_{i-1}\)加\(x\),\(p_i\)减\(x\). 先考虑\(p_{i-1}\)加\(x\)所造成的影响: 当\(p_{i-1}\ge0\)时,就相当于将答案加上\(x\). 当\(-x\le p_{i-1}<0\)时,原先的答案是\(-p_{i-1}\),新的答案是\(x+p_{i-1}\),所以答案加…

题目 注意题目中的,引用绝望的乐园中的进一步解释如下: 这是一道浙大月赛的题,一如既往的坑爹,好好一道水题,被搞成一道坑题!!! //注意:r(i) < l(i+1) !细节啊细节! #include<stdio.h> #include<string.h> #include<iostream> #include<algorithm> using namespace std; ];//这里必须是long long,不然还是wa int main() {…

D. Vladik and Favorite Game time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output This is an interactive problem. Vladik has favorite game, in which he plays all his free time. Game field could…