You are given an integer array gifts denoting the number of gifts in various piles. Every second, you do the following:
Return the number of gifts remaining after k seconds.
\n
Example 1:
\n\n\nInput: gifts = [25,64,9,4,100], k = 4\nOutput: 29\nExplanation: \nThe gifts are taken in the following way:\n- In the first second, the last pile is chosen and 10 gifts are left behind.\n- Then the second pile is chosen and 8 gifts are left behind.\n- After that the first pile is chosen and 5 gifts are left behind.\n- Finally, the last pile is chosen again and 3 gifts are left behind.\nThe final remaining gifts are [5,8,9,4,3], so the total number of gifts remaining is 29.\n\n\n
Example 2:
\n\n\nInput: gifts = [1,1,1,1], k = 4\nOutput: 4\nExplanation: \nIn this case, regardless which pile you choose, you have to leave behind 1 gift in each pile. \nThat is, you can't take any pile with you. \nSo, the total gifts remaining are 4.\n\n\n
\n
Constraints:
\n\n1 <= gifts.length <= 1031 <= gifts[i] <= 1091 <= k <= 103Compiled 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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