小公司HPR OA

第一题 simple cipher


第二题
Eliminate Algorithm

Data is acquired from multiple sources in order from least to most preferred. The higher priority source is used in the final parameter list, and any value from an ealier source is superseded. If a parameter Pi is present only in one of the sources, it is directly

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, 2
insert 4 at index 2 and shift 1, 2

output = [0, 3, 4, 1, 2]

Constraints:
1 <= n <= 2 * 10^5
0 <= indix[i], identity[i] <= n

native解法不行，要用O(nlogn)的解法