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Tree Recovery

[编程题]Tree Recovery
  • 热度指数：2 时间限制：C/C++ 1秒，其他语言2秒 空间限制：C/C++ 128M，其他语言256M
  • 算法知识视频讲解
You have N integers, A1, A2, ... , AN. You need to deal with two kinds of operations. One type of operation is to add some given number to each number in a given interval. The other is to ask for the sum of numbers in a given interval.

输入描述:
The first line contains two numbers N and Q. 1 ≤ N,Q ≤ 100000.
The second line contains N numbers, the initial values of A1, A2, ... , AN. -1000000000 ≤ Ai ≤ 1000000000.
Each of the next Q lines represents an operation.
"C a b c" means adding c to each of Aa, Aa+1, ... , Ab. -10000 ≤ c ≤ 10000.
"Q a b" means querying the sum of Aa, Aa+1, ... , Ab.


输出描述:
You need to answer all Q commands in order. One answer in a line.
示例1

输入

10 5
1 2 3 4 5 6 7 8 9 10
Q 4 4
Q 1 10
Q 2 4
C 3 6 3
Q 2 4

输出

4
55
9
15
算法知识视频讲解
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问题信息

线段树 树状数组
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