Machine Time Limit: 2 Seconds Memory Limit: 65536 KB In a typical assembly line, machines are connected one by one. The first machine's output product will be the second machine's raw material. To simplify the problem, we put all machines into a…
题意:0~n-1的数组,初始值为0:执行m个操作,每次操作执行后输出当前值为0的连续段的段数. 操作1: p i j : i~j区间的每个元素值减1 操作2: r i j :i~j区间的每个元素值加1,每个r操作之前,一定有个相应的p操作 数据范围:1 <= n <= 108, 0 <= m <= 20000 线段树现在已经成了竞赛选手的基本功,但是我这块好弱,写下这个题解,方便自己以后复习. 分析,这很明显是个用线段树来解的题,但是数据范围太大.注意到操作次数最多只有20000次…
[题目链接] A. ZOJ 4004 - Easy Number Game 首先肯定是选择值最小的 $2*m$ 进行操作,这些数在操作的时候每次取一个最大的和最小的相乘是最优的. #include <bits/stdc++.h> using namespace std; const int maxn = 100010; int T, n, m; long long a[maxn]; int main() { scanf("%d", &T); while(T--) {…
Problem Description As we all know, machine scheduling is a very classical problem in computer science and has been studied for a very long history. Scheduling problems differ widely in the nature of the constraints that must be satisfied and the typ…