408021: GYM102961 ZI Maximum Subarray Sum II
Memory Limit：256 MB
Time Limit：2 S
Judge Style：Text Compare
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Description
ZI. Maximum Subarray Sum IItime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard output
Given an array of $$$n$$$ integers, your task is to find the maximum sum of values in a contiguous subarray with length between $$$a$$$ and $$$b$$$.
InputThe first input line has three integers $$$n$$$, $$$a$$$, and $$$b$$$: the size of the array and the minimum and maximum subarray length.
The second line has $$$n$$$ integers $$$x_1,x_2,\dots,x_n$$$: the array values
Constraints:
- $$$1 \le n \le 2 \cdot 10^5$$$
- $$$1 \le a \le b \le 2 n$$$
- $$$1 \le x_i \le 10^9$$$
Print one integer: the maximum subarray sum.
ExampleInput8 1 2 -1 3 -2 5 3 -5 2 2Output
8