freopen可以忽略
by JS_TZ_ZHR @ 2020-10-02 21:04:37
老哥你记录都刷了一屏了，先别交了，评测姬爆啦，明儿个再改吧
by LFCode @ 2020-10-02 21:20:33
@[JS_TZ_ZHR](/user/200044) $f$数组开小了
by 胖头鱼学员 @ 2020-10-05 19:37:14