我觉得你应该是答案错误了 by Re_Star @ 2023-07-29 11:49:17
因为n个数(a[i]的数据范围是<=1e12的,所以维护前缀和做运算,ns可能爆long long,把ns改成long long就行 by zjpwwc @ 2023-09-19 15:15:36