Non-Decreasing Dilemma solution

Non-Decreasing Dilemma solution codeforces Alice has recently received an array a1,a2,…,ana1,a2,…,an for her birthday! She is very proud of her array, and when she showed her friend Bob the array, he was very happy with her present too! However, soon Bob became curious, and as any sane friend would do, asked Alice…

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