Easy Subarray Sum

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You are given an array $A$ of length $N$. You can perform the following operation on it any number of times (possibly, zero): - Choose any index $i$ ($1\leq i \leq N$) and change $A_i$ to $0$. Your goal is to maximize the value of the maximum subarray sum of $A$. Find the **minimum number of operations** needed to achieve this. Note that an **empty subarray** has a sum of $0$. Formally, -

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solution.cppC++17

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