题意: 有\(n(1 \leq n \leq 10^5)\)个数,和\(m(1 \leq m \leq 10^5)\)操作,和一个计算\(s\),一切运算都在模\(MOD\)进行的. 操作\(l, \, m\)表示先将区间\([l, r]\)的数字之和累加到\(s\)上,然后将区间的每个数平方. 输出每次操作后的\(s\). 分析: 虽然原理不是特别懂,但是有这样一个事实: 任意一个数\(x\)平方超过\(30\)次之后再平方就不会变了. 所以我们维护区间和的同时,再维护一个区间平方次数的最小值…

Attack Time Limit: 5000/3000 MS (Java/Others)    Memory Limit: 65768/65768 K (Java/Others)Total Submission(s): 2496    Accepted Submission(s): 788 Problem Description Today is the 10th Annual of “September 11 attacks”, the Al Qaeda is about to attack…

Coder Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 4838    Accepted Submission(s): 1853 Problem Description In mathematics and computer science, an algorithm describes a set of procedures…

Man Down Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2030    Accepted Submission(s): 743 Problem Description The Game “Man Down 100 floors” is an famous and interesting game.You can enjoy t…

Doom Time Limit: 12000/6000 MS (Java/Others)    Memory Limit: 524288/524288 K (Java/Others)Total Submission(s): 1401    Accepted Submission(s): 368 Problem Description THE END IS COMINGGGGGG! Mike has got stuck on a mystery machine. If he cannot solv…

1.HDU 5877  Weak Pair 2.总结:有多种做法,这里写了dfs+线段树(或+树状树组),还可用主席树或平衡树,但还不会这两个 3.思路:利用dfs遍历子节点,同时对于每个子节点au,查询它有多少个祖先av满足av<=k/au. (1)dfs+线段树 #include<iostream> #include<cstring> #include<cmath> #include<queue> #include<algorithm>…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=3308 题目很好懂,就是单点更新,然后求区间的最长上升子序列. 线段树区间合并问题,注意合并的条件是a[mid + 1] > a[mid],写的细心点就好了. #include <iostream> #include <cstring> #include <cstdio> using namespace std; ; struct SegTree { int l , r…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=2795 题目大意:有一块h*w的矩形广告板,要往上面贴广告;   然后给n个1*wi的广告,要求把广告贴上去: 而且要求广告要尽量往上贴并且尽量靠左;  求每个广告的所在的位置,不能贴则为-1. 用线段树模拟,要是左子树的最大值比当前广告大,就查询更新左子树,否则就右子树. #include <iostream> #include <cstdio> #include <cstrin…

Conturbatio Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=5480 Description There are many rook on a chessboard, a rook can attack the row and column it belongs, including its own place. There are also many quer…

http://acm.hdu.edu.cn/showproblem.php?pid=1828 Picture Time Limit: 6000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2135    Accepted Submission(s): 1134 Problem Description A number of rectangular posters,…