归并排序:50pts+TLE

P1908 逆序对

[站外类似题目AC记录](https://oj.aicoders.cn/submission-detail/2968385)
by XuOuXiao1024 @ 2024-03-25 13:28:05


@[XuOuXiao1024](/user/1054686) 您看了数据范围了嘛?吧数组跳到 $500000$ 然后把 $S$ 改为 ```long long ```
by kevinZ99 @ 2024-03-25 13:31:52


@[kevinZ99](/user/1117080) 谢谢
by XuOuXiao1024 @ 2024-03-25 13:38:26


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