@[lzagddsg](/user/635641) 初始化m.sum=-1;
by Cstdio_Rabbit @ 2022-08-07 21:12:15
@[lzagddsg](/user/635641) 有可能所有学生都0分。。。（很坑）
by Cstdio_Rabbit @ 2022-08-07 21:14:26
@[zswmb](/user/235901) 哦！！！
by lzagddsg @ 2022-08-08 15:40:40