A Simple Problem with Integers
| Time Limit: 5000MS |
|
Memory Limit: 131072K |
| Total Submissions: 53831 |
|
Accepted: 16158 |
| Case Time Limit: 2000MS |
Description
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.
Input
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.
Output
You need to answer all Q commands in order. One answer in a line.
Sample Input
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
Sample Output
4
55
9
15
Hint
The sums may exceed the range of 32-bit integers.
题意很简单，区间增减，区间求和。
学习fhq treap，每一次区间操作把区间cut出来，操作完在merge回去，很神奇，debug两天，终于ac啦。
代码：
/* ***********************************************
Author :xianxingwuguan
Created Time :2014/3/5 22:03:29
File Name :1.cpp
************************************************ */
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