1188 - Fast Queries PDF (English) Statistics Forum Time Limit: 3 second(s) Memory Limit: 64 MB Given an array of N integers indexed from 1 to N, and q queries, each in the form i j, you have to find the number of distinct integers from index i to …
传送门 #include <iostream> #include <cstdio> #include <cstring> #include <cmath> #include <algorithm> #define int long long using namespace std; const int maxn = 1e5 + 10; int T, n, q, block, a[maxn], ans, cnt[maxn], res[maxn];…
MongoDB is a powerful, flexible, and scalable data store. It combines the ability to scale out with many of the most useful features of relational databases, such as secondary indexes, range queries, and sorting. MongoDB is also incredibly featureful…
在进行Map/Reduce时,有的业务需要在一个job中将数据写入到多个HBase的表中,下面是实现方式. 原文地址:http://lookfirst.com/2011/07/hbase-multitableoutputformat-writing-to.html HBase MultiTableOutputFormat writing to multiple tables in one Map Reduce Job Recently, I've been having a lot of f…
Druid is a data store designed for high-performance slice-and-dice analytics ("OLAP"-style) on large data sets. Druid is most often used as a data store for powering GUI analytical applications, or as a backend for highly-concurrent APIs that ne…
Kernelized Locality-Sensitive Hashing Page Brian Kulis (1) and Kristen Grauman (2)(1) UC Berkeley EECS and ICSI, Berkeley, CA(2) University of Texas, Department of Computer Sciences, Austin, TX Introduction Fast indexing and search for large databa…