A Simple Problem with Integers (POJ-3468)
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.
题目翻译:
有N个整数,A1 A2…,一个。您需要处理两种操作。一种操作类型是在给定的区间内为每个数字添加给定的数字。另一种是要求给定区间内的数的和。
输入
第一行包含两个数字N和Q. 1≤N,Q≤100000。
第二行包含N个数字,A1 A2…,一个。-1000000000≤Ai≤1000000000
接下来的每一行Q代表一个操作。
“C a b C”的意思是把C加到Aa, Aa+1,…, Ab. -10000≤c≤10000。
“Q a b”表示查询Aa, Aa+1,…,Ab。
输出
您需要按顺序回答所有Q命令。一行一个答案。
提示
总和可能超过32位整数的范围。
思路:
线段树模板题,因为忘考虑范围而wa两发。。。。
AC代码:
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