题目链接: http://codeforces.com/contest/103/problem/D D. Time to Raid Cowavans time limit per test:4 secondsmemory limit per test:70 megabytes 问题描述 As you know, the most intelligent beings on the Earth are, of course, cows. This conclusion was reached lo…
Time to Raid Cowavans 题意: 询问 下标满足 a + b * k 的和是多少. 题解: 将询问分块. 将b >= blo直接算出答案. 否则存下来. 存下来之后,对于每个b扫一遍数组,然后同时处理相同b的询问. 代码: #include<bits/stdc++.h> using namespace std; #define Fopen freopen("_in.txt","r",stdin); freopen("_o…
D. Turtles Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/103/problem/D Description As you know, the most intelligent beings on the Earth are, of course, cows. This conclusion was reached long ago by the Martian aliens, a…
Discription As you know, the most intelligent beings on the Earth are, of course, cows. This conclusion was reached long ago by the Martian aliens, as well as a number of other intelligent civilizations from outer space. Sometimes cows gather into co…
先对b从小到大sort,判断b是不是比sqrt(n)大,是的话就直接暴力,不是的话就用dp维护一下 dp[i]表示以nb为等差,i为起点的答案,可以节省nb相同的情况 #include<bits/stdc++.h> #define fi first #define se second #define mp make_pair #define pb push_back #define pii pair<int,int> #define C 0.5772156649 #define p…
D. Time to Raid Cowavans time limit per test 4 seconds memory limit per test 70 megabytes input standard input output standard output As you know, the most intelligent beings on the Earth are, of course, cows. This conclusion was reached long ago by…
RAID: old Redundant Arrays of Inexpensive Disks (廉价磁盘冗余阵列) new Redundant Arrays of Independent Disks (独立磁盘冗余阵列) Berkeley: A case for Redundent Arrays of Inexpensive Disks RAID 功能: 提高IO能力:磁盘并行读写: 提高耐用性:磁盘冗余来实现.但是raid不能取代数据备份,raid只是减少磁盘对于数据的影响.人为操作数据无法…