@[19554510711q](/user/1226563) 虽然你 sum 开了 `long long`，但 `printf` 输出时$\dots$
by xiaoshumiao @ 2024-01-02 16:19:24
@[xiaoshumiao](/user/1008513) 谢谢
by Qi_jB @ 2024-01-02 16:20:37