You are given a 0-indexed array usageLimits of length n.
Your task is to create groups using numbers from 0 to n - 1, ensuring that each number, i, is used no more than usageLimits[i] times in total across all groups. You must also satisfy the following conditions:
Return an integer denoting the maximum number of groups you can create while satisfying these conditions.
\n\n\n
Example 1:
\n\n\nInput: usageLimits = [1,2,5]\nOutput: 3\nExplanation: In this example, we can use 0 at most once, 1 at most twice, and 2 at most five times.\nOne way of creating the maximum number of groups while satisfying the conditions is: \nGroup 1 contains the number [2].\nGroup 2 contains the numbers [1,2].\nGroup 3 contains the numbers [0,1,2]. \nIt can be shown that the maximum number of groups is 3. \nSo, the output is 3. \n\nExample 2:
\n\n\nInput: usageLimits = [2,1,2]\nOutput: 2\nExplanation: In this example, we can use 0 at most twice, 1 at most once, and 2 at most twice.\nOne way of creating the maximum number of groups while satisfying the conditions is:\nGroup 1 contains the number [0].\nGroup 2 contains the numbers [1,2].\nIt can be shown that the maximum number of groups is 2.\nSo, the output is 2. \n\n\nExample 3:
\n\n\nInput: usageLimits = [1,1]\nOutput: 1\nExplanation: In this example, we can use both 0 and 1 at most once.\nOne way of creating the maximum number of groups while satisfying the conditions is:\nGroup 1 contains the number [0].\nIt can be shown that the maximum number of groups is 1.\nSo, the output is 1. \n\n\n\n
Constraints:
\n\n1 <= usageLimits.length <= 1051 <= usageLimits[i] <= 109Compiled with clang 11 using the latest C++ 20 standard.
Your code is compiled with level two optimization (-O2). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.
Most standard library headers are already included automatically for your convenience.
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