HBC51100★★比赛新机制★★,递推,枚举,前缀和A Simple Problem with Integers题解

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. 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.

You have N integers, A_1, A_2, ... , A_N. A 1 ​ ,A 2 ​ ,...,A N ​ . 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.

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标签： HBC51100★★比赛新机制★★ 递推 枚举 前缀和A Simple Problem with Integers题解